Linux e000727e84fa 5.4.0-208-generic #228-Ubuntu SMP Fri Feb 7 19:41:33 UTC 2025 x86_64
Apache/2.4.62 (Debian)
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8.2.27
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[ HOME SHELL ]
Name
Size
Permission
Action
[
66.89
KB
-rwxr-xr-x
ab
58.42
KB
-rwxr-xr-x
addpart
30.31
KB
-rwxr-xr-x
addr2line
23.14
KB
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apt
18.31
KB
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apt-cache
86.38
KB
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apt-cdrom
22.38
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apt-config
26.31
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50.38
KB
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apt-key
27.32
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58.38
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51.17
KB
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42.86
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as
897.41
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14.85
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8.82
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32.69
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26.3
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16.77
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33.22
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awk
154.66
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58.98
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46.89
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46.89
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42.83
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54.89
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1.21
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6.7
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38.3
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38.3
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2.17
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2.17
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3.69
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4.78
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3.69
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3.69
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38.3
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14.23
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1.27
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1.27
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1.25
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18.51
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c89
428
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454
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90.34
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cat
42.98
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cc
1.24
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78.49
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14.24
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67.11
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14.23
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61.2
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67.05
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62.98
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54.31
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71.05
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66.31
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51.64
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139.05
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14.15
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50.95
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46.92
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15.01
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cp
147.61
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cpan
8.16
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8.18
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cpp
1.24
MB
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cpp-12
1.24
MB
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119.17
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curl
274.22
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46.98
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122.7
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119.05
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dd
87.15
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23.79
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deb-systemd-invoke
6.09
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debconf
2.79
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11.27
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debconf-communicate
608
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1.68
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647
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2.92
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1.78
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30.31
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99.8
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151.58
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67.14
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147.8
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50.92
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38.83
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86.58
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22.15
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22.15
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310.64
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14.85
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8.14
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32.63
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7.45
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166.52
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2.72
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154.55
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18.48
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17.39
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14.2
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10.65
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20.71
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dpkg-mergechangelogs
8.88
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dpkg-name
6.62
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dpkg-parsechangelog
4.83
KB
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dpkg-query
158.58
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dpkg-realpath
4.09
KB
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dpkg-scanpackages
8.47
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dpkg-scansources
8.98
KB
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dpkg-shlibdeps
31.17
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dpkg-source
22.91
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126.48
KB
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62.33
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dpkg-trigger
86.48
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dpkg-vendor
3.18
KB
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du
171.33
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dwp
1.79
MB
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42.83
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egrep
41
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35.03
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enc2xs
40.96
KB
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encguess
3
KB
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47.4
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42.92
KB
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30.45
KB
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115.05
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83.2
KB
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faillog
22.53
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34.31
KB
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false
34.83
KB
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fcgistarter
14.23
KB
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fgrep
41
B
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file
26.48
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fincore
34.36
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find
219.58
KB
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findmnt
83.59
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flock
34.39
KB
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fmt
46.89
KB
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fold
42.89
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26.3
KB
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g++
1.25
MB
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1.25
MB
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1.24
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1.24
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34.54
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34.54
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34.54
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34.54
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34.54
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34.54
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gcov
720.16
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720.16
KB
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568.02
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568.02
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588.09
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588.09
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26.75
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26.5
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35.47
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34.31
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gmake
234.65
KB
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gold
2.99
MB
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gp-archive
159.06
KB
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175.27
KB
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gp-display-html
578.29
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gp-display-src
150.81
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gp-display-text
257.3
KB
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gpasswd
86.42
KB
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gpgv
463
KB
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gprof
108.35
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gprofng
146.59
KB
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grep
198.39
KB
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groups
42.89
KB
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gunzip
2.29
KB
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6.3
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gzip
95.84
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h2ph
28.54
KB
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h2xs
59.51
KB
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50.39
KB
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head
46.95
KB
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hostid
38.83
KB
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hostname
22.15
KB
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htcacheclean
34.24
KB
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htdbm
26.23
KB
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htdigest
14.23
KB
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htpasswd
26.23
KB
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26.58
KB
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iconv
63.13
KB
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id
47.02
KB
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ifnames
4.08
KB
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infocmp
62.31
KB
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infotocap
90.34
KB
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155.8
KB
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instmodsh
4.27
KB
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ionice
34.31
KB
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ipcmk
34.38
KB
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ipcrm
34.31
KB
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ipcs
74.31
KB
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ischroot
14.32
KB
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join
54.98
KB
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json_pp
4.88
KB
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22.3
KB
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last
50.31
KB
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lastb
50.31
KB
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lastlog
31.75
KB
-rwxr-xr-x
ld
1.27
MB
-rwxr-xr-x
ld.bfd
1.27
MB
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ld.gold
2.99
MB
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ld.so
205.96
KB
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ldd
5.28
KB
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libnetcfg
15.41
KB
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link
38.83
KB
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26.58
KB
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26.58
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ln
71.12
KB
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locale
46.16
KB
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localedef
291.91
KB
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logger
54.9
KB
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login
51.78
KB
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logname
38.83
KB
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logresolve
14.24
KB
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ls
147.8
KB
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lsattr
14.24
KB
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lsblk
202.31
KB
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lscpu
126.31
KB
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lsfd
120.3
KB
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lsipc
98.31
KB
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lsirq
34.48
KB
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lslocks
70.7
KB
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94.31
KB
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lsmem
66.31
KB
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lsns
82.31
KB
-rwxr-xr-x
lto-dump
30.47
MB
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30.47
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lzcat
82.7
KB
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lzcmp
7.25
KB
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lzdiff
7.25
KB
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lzegrep
10.09
KB
-rwxr-xr-x
lzfgrep
10.09
KB
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lzgrep
10.09
KB
-rwxr-xr-x
lzless
1.77
KB
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lzma
82.7
KB
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lzmainfo
14.3
KB
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lzmore
2.14
KB
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271.52
KB
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make
234.65
KB
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4.79
KB
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mawk
154.66
KB
-rwxr-xr-x
mcookie
34.38
KB
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md5sum
50.95
KB
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md5sum.textutils
50.95
KB
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mesg
18.3
KB
-rwxr-xr-x
mkdir
95.27
KB
-rwxr-xr-x
mkfifo
67.17
KB
-rwxr-xr-x
mknod
71.2
KB
-rwxr-xr-x
mktemp
42.92
KB
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more
58.31
KB
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mount
58.3
KB
-rwsr-xr-x
mountpoint
18.3
KB
-rwxr-xr-x
mv
139.62
KB
-rwxr-xr-x
namei
34.31
KB
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nawk
154.66
KB
-rwxr-xr-x
newgrp
47.75
KB
-rwsr-xr-x
nice
42.86
KB
-rwxr-xr-x
nisdomainname
22.15
KB
-rwxr-xr-x
nl
111.11
KB
-rwxr-xr-x
nm
44.03
KB
-rwxr-xr-x
nohup
42.89
KB
-rwxr-xr-x
nproc
42.89
KB
-rwxr-xr-x
nsenter
34.54
KB
-rwxr-xr-x
numfmt
67.02
KB
-rwxr-xr-x
objcopy
155.66
KB
-rwxr-xr-x
objdump
362.56
KB
-rwxr-xr-x
od
79.02
KB
-rwxr-xr-x
openssl
953.26
KB
-rwxr-xr-x
pager
58.31
KB
-rwxr-xr-x
partx
118.31
KB
-rwxr-xr-x
passwd
66.65
KB
-rwsr-xr-x
paste
42.89
KB
-rwxr-xr-x
patch
187.44
KB
-rwxr-xr-x
pathchk
42.86
KB
-rwxr-xr-x
perl
3.63
MB
-rwxr-xr-x
perl5.36-x86_64-linux-gnu
14.41
KB
-rwxr-xr-x
perl5.36.0
3.63
MB
-rwxr-xr-x
perlbug
44.12
KB
-rwxr-xr-x
perldoc
125
B
-rwxr-xr-x
perlivp
10.61
KB
-rwxr-xr-x
perlthanks
44.12
KB
-rwxr-xr-x
pgrep
34.42
KB
-rwxr-xr-x
piconv
8.16
KB
-rwxr-xr-x
pidof
26.31
KB
-rwxr-xr-x
pidwait
34.42
KB
-rwxr-xr-x
pinky
47.05
KB
-rwxr-xr-x
pkg-config
44.04
KB
-rwxr-xr-x
pkgconf
44.04
KB
-rwxr-xr-x
pkill
34.42
KB
-rwxr-xr-x
pl2pm
4.43
KB
-rwxr-xr-x
pldd
22.69
KB
-rwxr-xr-x
pmap
34.34
KB
-rwxr-xr-x
pod2html
4.04
KB
-rwxr-xr-x
pod2man
14.68
KB
-rwxr-xr-x
pod2text
10.55
KB
-rwxr-xr-x
pod2usage
4.01
KB
-rwxr-xr-x
podchecker
3.57
KB
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pr
79.11
KB
-rwxr-xr-x
printenv
34.83
KB
-rwxr-xr-x
printf
62.92
KB
-rwxr-xr-x
prlimit
38.83
KB
-rwxr-xr-x
prove
13.34
KB
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ps
142.93
KB
-rwxr-xr-x
ptar
3.48
KB
-rwxr-xr-x
ptardiff
2.58
KB
-rwxr-xr-x
ptargrep
4.29
KB
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ptx
135.23
KB
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pwd
42.92
KB
-rwxr-xr-x
pwdx
14.3
KB
-rwxr-xr-x
ranlib
51.17
KB
-rwxr-xr-x
rbash
1.21
MB
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re2c
698.47
KB
-rwxr-xr-x
re2go
698.47
KB
-rwxr-xr-x
re2rust
698.47
KB
-rwxr-xr-x
readelf
751.38
KB
-rwxr-xr-x
readlink
50.89
KB
-rwxr-xr-x
realpath
50.92
KB
-rwxr-xr-x
rename.ul
22.3
KB
-rwxr-xr-x
renice
14.3
KB
-rwxr-xr-x
reset
30.24
KB
-rwxr-xr-x
resizepart
70.31
KB
-rwxr-xr-x
rev
14.3
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Code Editor : dpkg-maintscript-helper
#!/bin/sh # # Copyright © 2007, 2011-2015 Guillem Jover <guillem@debian.org> # Copyright © 2010 Raphaël Hertzog <hertzog@debian.org> # Copyright © 2008 Joey Hess <joeyh@debian.org> # Copyright © 2005 Scott James Remnant (original implementation on www.dpkg.org) # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <https://www.gnu.org/licenses/>. # The conffile related functions are inspired by # https://wiki.debian.org/DpkgConffileHandling # This script is documented in dpkg-maintscript-helper(1) ## ## Functions to remove an obsolete conffile during upgrade ## rm_conffile() { local CONFFILE="$1" local LASTVERSION="$2" local PACKAGE="$3" if [ "$LASTVERSION" = "--" ]; then LASTVERSION="" PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi if [ "$PACKAGE" = "--" -o -z "$PACKAGE" ]; then PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi # Skip remaining parameters up to -- while [ "$1" != "--" -a $# -gt 0 ]; do shift done [ $# -gt 0 ] || badusage "missing arguments after --" shift [ -n "$PACKAGE" ] || error "couldn't identify the package" [ -n "$1" ] || error "maintainer script parameters are missing" [ -n "$DPKG_MAINTSCRIPT_NAME" ] || \ error "environment variable DPKG_MAINTSCRIPT_NAME is required" [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] || \ error "environment variable DPKG_MAINTSCRIPT_PACKAGE is required" [ "${CONFFILE}" != "${CONFFILE#/}" ] || \ error "conffile '$CONFFILE' is not an absolute path" validate_optional_version "$LASTVERSION" debug "Executing $0 rm_conffile in $DPKG_MAINTSCRIPT_NAME" \ "of $DPKG_MAINTSCRIPT_PACKAGE" debug "CONFFILE=$CONFFILE PACKAGE=$PACKAGE" \ "LASTVERSION=$LASTVERSION ACTION=$1 PARAM=$2" case "$DPKG_MAINTSCRIPT_NAME" in preinst) if [ "$1" = "install" -o "$1" = "upgrade" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then prepare_rm_conffile "$CONFFILE" "$PACKAGE" fi ;; postinst) if [ "$1" = "configure" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then finish_rm_conffile "$CONFFILE" fi ;; postrm) if [ "$1" = "purge" ]; then rm -f "$DPKG_ROOT$CONFFILE.dpkg-bak" \ "$DPKG_ROOT$CONFFILE.dpkg-remove" \ "$DPKG_ROOT$CONFFILE.dpkg-backup" fi if [ "$1" = "abort-install" -o "$1" = "abort-upgrade" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then abort_rm_conffile "$CONFFILE" "$PACKAGE" fi ;; *) debug "$0 rm_conffile not required in $DPKG_MAINTSCRIPT_NAME" ;; esac } prepare_rm_conffile() { local CONFFILE="$1" local PACKAGE="$2" [ -e "$DPKG_ROOT$CONFFILE" ] || return 0 ensure_package_owns_file "$PACKAGE" "$CONFFILE" || return 0 local md5sum old_md5sum md5sum="$(md5sum "$DPKG_ROOT$CONFFILE" | sed -e 's/ .*//')" old_md5sum="$(dpkg-query -W -f='${Conffiles}' "$PACKAGE" | \ sed -n -e "\\'^ $CONFFILE ' { s/ obsolete$//; s/.* //; p }")" if [ "$md5sum" != "$old_md5sum" ]; then mv -f "$DPKG_ROOT$CONFFILE" "$DPKG_ROOT$CONFFILE.dpkg-backup" else mv -f "$DPKG_ROOT$CONFFILE" "$DPKG_ROOT$CONFFILE.dpkg-remove" fi } finish_rm_conffile() { local CONFFILE="$1" if [ -e "$DPKG_ROOT$CONFFILE.dpkg-backup" ]; then echo "Obsolete conffile $DPKG_ROOT$CONFFILE has been modified by you." echo "Saving as $DPKG_ROOT$CONFFILE.dpkg-bak ..." mv -f "$DPKG_ROOT$CONFFILE.dpkg-backup" "$DPKG_ROOT$CONFFILE.dpkg-bak" fi if [ -e "$DPKG_ROOT$CONFFILE.dpkg-remove" ]; then echo "Removing obsolete conffile $DPKG_ROOT$CONFFILE ..." rm -f "$DPKG_ROOT$CONFFILE.dpkg-remove" fi } abort_rm_conffile() { local CONFFILE="$1" local PACKAGE="$2" ensure_package_owns_file "$PACKAGE" "$CONFFILE" || return 0 if [ -e "$DPKG_ROOT$CONFFILE.dpkg-remove" ]; then echo "Reinstalling $DPKG_ROOT$CONFFILE that was moved away" mv "$DPKG_ROOT$CONFFILE.dpkg-remove" "$DPKG_ROOT$CONFFILE" fi if [ -e "$DPKG_ROOT$CONFFILE.dpkg-backup" ]; then echo "Reinstalling $DPKG_ROOT$CONFFILE that was backed-up" mv "$DPKG_ROOT$CONFFILE.dpkg-backup" "$DPKG_ROOT$CONFFILE" fi } ## ## Functions to rename a conffile during upgrade ## mv_conffile() { local OLDCONFFILE="$1" local NEWCONFFILE="$2" local LASTVERSION="$3" local PACKAGE="$4" if [ "$LASTVERSION" = "--" ]; then LASTVERSION="" PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi if [ "$PACKAGE" = "--" -o -z "$PACKAGE" ]; then PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi # Skip remaining parameters up to -- while [ "$1" != "--" -a $# -gt 0 ]; do shift done [ $# -gt 0 ] || badusage "missing arguments after --" shift [ -n "$PACKAGE" ] || error "couldn't identify the package" [ -n "$1" ] || error "maintainer script parameters are missing" [ -n "$DPKG_MAINTSCRIPT_NAME" ] || \ error "environment variable DPKG_MAINTSCRIPT_NAME is required" [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] || \ error "environment variable DPKG_MAINTSCRIPT_PACKAGE is required" [ "${OLDCONFFILE}" != "${OLDCONFFILE#/}" ] || \ error "old-conffile '$OLDCONFFILE' is not an absolute path" [ "${NEWCONFFILE}" != "${NEWCONFFILE#/}" ] || \ error "new-conffile '$NEWCONFFILE' is not an absolute path" validate_optional_version "$LASTVERSION" debug "Executing $0 mv_conffile in $DPKG_MAINTSCRIPT_NAME" \ "of $DPKG_MAINTSCRIPT_PACKAGE" debug "CONFFILE=$OLDCONFFILE -> $NEWCONFFILE PACKAGE=$PACKAGE" \ "LASTVERSION=$LASTVERSION ACTION=$1 PARAM=$2" case "$DPKG_MAINTSCRIPT_NAME" in preinst) if [ "$1" = "install" -o "$1" = "upgrade" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then prepare_mv_conffile "$OLDCONFFILE" "$PACKAGE" fi ;; postinst) if [ "$1" = "configure" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then finish_mv_conffile "$OLDCONFFILE" "$NEWCONFFILE" "$PACKAGE" fi ;; postrm) if [ "$1" = "abort-install" -o "$1" = "abort-upgrade" ] && [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then abort_mv_conffile "$OLDCONFFILE" "$PACKAGE" fi ;; *) debug "$0 mv_conffile not required in $DPKG_MAINTSCRIPT_NAME" ;; esac } prepare_mv_conffile() { local CONFFILE="$1" local PACKAGE="$2" [ -e "$DPKG_ROOT$CONFFILE" ] || return 0 ensure_package_owns_file "$PACKAGE" "$CONFFILE" || return 0 local md5sum old_md5sum md5sum="$(md5sum "$DPKG_ROOT$CONFFILE" | sed -e 's/ .*//')" old_md5sum="$(dpkg-query -W -f='${Conffiles}' "$PACKAGE" | \ sed -n -e "\\'^ $CONFFILE ' { s/ obsolete$//; s/.* //; p }")" if [ "$md5sum" = "$old_md5sum" ]; then mv -f "$DPKG_ROOT$CONFFILE" "$DPKG_ROOT$CONFFILE.dpkg-remove" fi } finish_mv_conffile() { local OLDCONFFILE="$1" local NEWCONFFILE="$2" local PACKAGE="$3" rm -f "$DPKG_ROOT$OLDCONFFILE.dpkg-remove" [ -e "$DPKG_ROOT$OLDCONFFILE" ] || return 0 ensure_package_owns_file "$PACKAGE" "$OLDCONFFILE" || return 0 echo "Preserving user changes to $DPKG_ROOT$NEWCONFFILE (renamed from $DPKG_ROOT$OLDCONFFILE)..." if [ -e "$DPKG_ROOT$NEWCONFFILE" ]; then mv -f "$DPKG_ROOT$NEWCONFFILE" "$DPKG_ROOT$NEWCONFFILE.dpkg-new" fi mv -f "$DPKG_ROOT$OLDCONFFILE" "$DPKG_ROOT$NEWCONFFILE" } abort_mv_conffile() { local CONFFILE="$1" local PACKAGE="$2" ensure_package_owns_file "$PACKAGE" "$CONFFILE" || return 0 if [ -e "$DPKG_ROOT$CONFFILE.dpkg-remove" ]; then echo "Reinstalling $DPKG_ROOT$CONFFILE that was moved away" mv "$DPKG_ROOT$CONFFILE.dpkg-remove" "$DPKG_ROOT$CONFFILE" fi } ## ## Functions to replace a symlink with a directory ## symlink_to_dir() { local SYMLINK="$1" local SYMLINK_TARGET="$2" local LASTVERSION="$3" local PACKAGE="$4" if [ "$LASTVERSION" = "--" ]; then LASTVERSION="" PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi if [ "$PACKAGE" = "--" -o -z "$PACKAGE" ]; then PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi # Skip remaining parameters up to -- while [ "$1" != "--" -a $# -gt 0 ]; do shift done [ $# -gt 0 ] || badusage "missing arguments after --" shift [ -n "$DPKG_MAINTSCRIPT_NAME" ] || \ error "environment variable DPKG_MAINTSCRIPT_NAME is required" [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] || \ error "environment variable DPKG_MAINTSCRIPT_PACKAGE is required" [ -n "$PACKAGE" ] || error "cannot identify the package" [ -n "$SYMLINK" ] || error "symlink parameter is missing" [ "${SYMLINK#/}" = "$SYMLINK" ] && \ error "symlink pathname is not an absolute path" [ "${SYMLINK%/}" = "$SYMLINK" ] || \ error "symlink pathname ends with a slash" [ -n "$SYMLINK_TARGET" ] || error "original symlink target is missing" [ -n "$1" ] || error "maintainer script parameters are missing" validate_optional_version "$LASTVERSION" debug "Executing $0 symlink_to_dir in $DPKG_MAINTSCRIPT_NAME" \ "of $DPKG_MAINTSCRIPT_PACKAGE" debug "SYMLINK=$SYMLINK -> $SYMLINK_TARGET PACKAGE=$PACKAGE" \ "LASTVERSION=$LASTVERSION ACTION=$1 PARAM=$2" case "$DPKG_MAINTSCRIPT_NAME" in preinst) if [ "$1" = "install" -o "$1" = "upgrade" ] && [ -n "$2" ] && [ -h "$DPKG_ROOT$SYMLINK" ] && symlink_match "$SYMLINK" "$SYMLINK_TARGET" && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then mv -f "$DPKG_ROOT$SYMLINK" "$DPKG_ROOT${SYMLINK}.dpkg-backup" fi ;; postinst) # We cannot bail depending on the version, as here we only # know what was the last configured version, and we might # have been unpacked, then upgraded with an unpack and thus # never been configured before. if [ "$1" = "configure" ] && [ -h "$DPKG_ROOT${SYMLINK}.dpkg-backup" ] && symlink_match "${SYMLINK}.dpkg-backup" "$SYMLINK_TARGET" then rm -f "$DPKG_ROOT${SYMLINK}.dpkg-backup" fi ;; postrm) if [ "$1" = "purge" ] && [ -h "$DPKG_ROOT${SYMLINK}.dpkg-backup" ]; then rm -f "$DPKG_ROOT${SYMLINK}.dpkg-backup" fi if [ "$1" = "abort-install" -o "$1" = "abort-upgrade" ] && [ -n "$2" ] && [ ! -e "$DPKG_ROOT$SYMLINK" ] && [ -h "$DPKG_ROOT${SYMLINK}.dpkg-backup" ] && symlink_match "${SYMLINK}.dpkg-backup" "$SYMLINK_TARGET" && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then echo "Restoring backup of $DPKG_ROOT$SYMLINK ..." mv "$DPKG_ROOT${SYMLINK}.dpkg-backup" "$DPKG_ROOT$SYMLINK" fi ;; *) debug "$0 symlink_to_dir not required in $DPKG_MAINTSCRIPT_NAME" ;; esac } ## ## Functions to replace a directory with a symlink ## dir_to_symlink() { local PATHNAME="${1%/}" local SYMLINK_TARGET="$2" local LASTVERSION="$3" local PACKAGE="$4" if [ "$LASTVERSION" = "--" ]; then LASTVERSION="" PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi if [ "$PACKAGE" = "--" -o -z "$PACKAGE" ]; then PACKAGE="$DPKG_MAINTSCRIPT_PACKAGE${DPKG_MAINTSCRIPT_ARCH:+:$DPKG_MAINTSCRIPT_ARCH}" fi # Skip remaining parameters up to -- while [ "$1" != "--" -a $# -gt 0 ]; do shift done [ $# -gt 0 ] || badusage "missing arguments after --" shift [ -n "$DPKG_MAINTSCRIPT_NAME" ] || \ error "environment variable DPKG_MAINTSCRIPT_NAME is required" [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] || \ error "environment variable DPKG_MAINTSCRIPT_PACKAGE is required" [ -n "$PACKAGE" ] || error "cannot identify the package" [ -n "$PATHNAME" ] || error "directory parameter is missing" [ "${PATHNAME#/}" = "$PATHNAME" ] && \ error "directory parameter is not an absolute path" [ -n "$SYMLINK_TARGET" ] || error "new symlink target is missing" [ -n "$1" ] || error "maintainer script parameters are missing" validate_optional_version "$LASTVERSION" debug "Executing $0 dir_to_symlink in $DPKG_MAINTSCRIPT_NAME" \ "of $DPKG_MAINTSCRIPT_PACKAGE" debug "PATHNAME=$PATHNAME SYMLINK_TARGET=$SYMLINK_TARGET" \ "PACKAGE=$PACKAGE LASTVERSION=$LASTVERSION ACTION=$1 PARAM=$2" case "$DPKG_MAINTSCRIPT_NAME" in preinst) if [ "$1" = "install" -o "$1" = "upgrade" ] && [ -n "$2" ] && [ ! -h "$DPKG_ROOT$PATHNAME" ] && [ -d "$DPKG_ROOT$PATHNAME" ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then prepare_dir_to_symlink "$PACKAGE" "$PATHNAME" fi ;; postinst) # We cannot bail depending on the version, as here we only # know what was the last configured version, and we might # have been unpacked, then upgraded with an unpack and thus # never been configured before. if [ "$1" = "configure" ] && [ -d "$DPKG_ROOT${PATHNAME}.dpkg-backup" ] && [ ! -h "$DPKG_ROOT$PATHNAME" ] && [ -d "$DPKG_ROOT$PATHNAME" ] && [ -f "$DPKG_ROOT$PATHNAME/.dpkg-staging-dir" ]; then finish_dir_to_symlink "$PATHNAME" "$SYMLINK_TARGET" fi ;; postrm) if [ "$1" = "purge" ] && [ -d "$DPKG_ROOT${PATHNAME}.dpkg-backup" ]; then rm -rf "$DPKG_ROOT${PATHNAME}.dpkg-backup" fi if [ "$1" = "abort-install" -o "$1" = "abort-upgrade" ] && [ -n "$2" ] && [ -d "$DPKG_ROOT${PATHNAME}.dpkg-backup" ] && [ \( ! -h "$DPKG_ROOT$PATHNAME" -a \ -d "$DPKG_ROOT$PATHNAME" -a \ -f "$DPKG_ROOT$PATHNAME/.dpkg-staging-dir" \) -o \ \( -h "$DPKG_ROOT$PATHNAME" -a \ \( "$(readlink "$DPKG_ROOT$PATHNAME")" = "$SYMLINK_TARGET" -o \ "$(dpkg-realpath "$PATHNAME")" = "$SYMLINK_TARGET" \) \) ] && dpkg --compare-versions -- "$2" le-nl "$LASTVERSION"; then abort_dir_to_symlink "$PATHNAME" fi ;; *) debug "$0 dir_to_symlink not required in $DPKG_MAINTSCRIPT_NAME" ;; esac } prepare_dir_to_symlink() { local PACKAGE="$1" local PATHNAME="$2" local LINE # If there are conffiles we should not perform the switch. dpkg-query -W -f='${Conffiles}\n' "$PACKAGE" | while read -r LINE; do case "$LINE" in "$PATHNAME"/*) error "directory '$PATHNAME' contains conffiles," \ "cannot switch to symlink" ;; esac done # If there are locally created files or files owned by another package # we should not perform the switch. export DPKG_MAINTSCRIPT_HELPER_INTERNAL_API="$version" find "$DPKG_ROOT$PATHNAME" -print0 | \ xargs -0 -n1 "$0" _internal_pkg_must_own_file "$PACKAGE" || \ error "directory '$PATHNAME' contains files not owned by" \ "package $PACKAGE, cannot switch to symlink" unset DPKG_MAINTSCRIPT_HELPER_INTERNAL_API # At this point, we know that the directory either contains no files, # or only non-conffiles owned by the package. # # To do the switch we cannot simply replace it with the final symlink # just yet, because dpkg needs to remove any file present in the old # package that have disappeared in the new one, and we do not want to # lose files resolving to the same pathname in the symlink target. # # We cannot replace the directory with a staging symlink either, # because dpkg will update symlinks to their new target. # # So we need to create a staging directory, to avoid removing files # from other packages, and to trap any new files in the directory # to move them to their correct place later on. mv -f "$DPKG_ROOT$PATHNAME" "$DPKG_ROOT${PATHNAME}.dpkg-backup" mkdir "$DPKG_ROOT$PATHNAME" # Mark it as a staging directory, so that we can track things. touch "$DPKG_ROOT$PATHNAME/.dpkg-staging-dir" } finish_dir_to_symlink() { local PATHNAME="$1" local SYMLINK_TARGET="$2" # Move the contents of the staging directory to the symlink target, # as those are all new files installed between this package being # unpacked and configured. local ABS_SYMLINK_TARGET if [ "${SYMLINK_TARGET#/}" = "$SYMLINK_TARGET" ]; then ABS_SYMLINK_TARGET="$(dirname "$PATHNAME")/$SYMLINK_TARGET" else ABS_SYMLINK_TARGET="$SYMLINK_TARGET" fi rm "$DPKG_ROOT$PATHNAME/.dpkg-staging-dir" find "$DPKG_ROOT$PATHNAME" -mindepth 1 -maxdepth 1 -print0 | \ xargs -0 -I% mv -f "%" "$DPKG_ROOT$ABS_SYMLINK_TARGET/" # Remove the staging directory. rmdir "$DPKG_ROOT$PATHNAME" # Do the actual switch. ln -s "$SYMLINK_TARGET" "$DPKG_ROOT$PATHNAME" # We are left behind the old files owned by this package in the backup # directory, just remove it. rm -rf "$DPKG_ROOT${PATHNAME}.dpkg-backup" } abort_dir_to_symlink() { local PATHNAME="$1" echo "Restoring backup of $DPKG_ROOT$PATHNAME ..." if [ -h "$DPKG_ROOT$PATHNAME" ]; then rm -f "$DPKG_ROOT$PATHNAME" else # The staging directory must be empty, as no other package # should have been unpacked in between. rm -f "$DPKG_ROOT$PATHNAME/.dpkg-staging-dir" rmdir "$DPKG_ROOT$PATHNAME" fi mv "$DPKG_ROOT${PATHNAME}.dpkg-backup" "$DPKG_ROOT$PATHNAME" } # Common functions validate_optional_version() { local VERSION="$1" if [ -z "$VERSION" ]; then return fi if ! VERSIONCHECK=$(dpkg --validate-version -- "$VERSION" 2>&1); then error "$VERSIONCHECK" fi } ensure_package_owns_file() { local PACKAGE="$1" local FILE="$2" if ! dpkg-query -L "$PACKAGE" | grep -F -q -x "$FILE"; then debug "File '$FILE' not owned by package " \ "'$PACKAGE', skipping $command" return 1 fi return 0 } internal_pkg_must_own_file() { local PACKAGE="$1" local FILE="${2##"$DPKG_ROOT"}" if [ "$DPKG_MAINTSCRIPT_HELPER_INTERNAL_API" != "$version" ]; then error "internal API used by external command" fi if ! ensure_package_owns_file "$PACKAGE" "$FILE"; then error "file '$FILE' not owned by package '$PACKAGE'" fi return 0 } symlink_match() { local SYMLINK="$1" local SYMLINK_TARGET="$2" [ "$(readlink "$DPKG_ROOT$SYMLINK")" = "$SYMLINK_TARGET" ] || \ [ "$(dpkg-realpath "$SYMLINK")" = "$SYMLINK_TARGET" ] } usage() { cat <<END Usage: $PROGNAME <command> <parameter>... -- <maintainer-script-parameter>... Commands: supports <command> Returns 0 (success) if the given command is supported, 1 otherwise. rm_conffile <conffile> [<last-version> [<package>]] Remove obsolete conffile. Must be called in preinst, postinst and postrm. mv_conffile <old-conf> <new-conf> [<last-version> [<package>]] Rename a conffile. Must be called in preinst, postinst and postrm. symlink_to_dir <pathname> <old-symlink-target> [<last-version> [<package>]] Replace a symlink with a directory. Must be called in preinst, postinst and postrm. dir_to_symlink <pathname> <new-symlink-target> [<last-version> [<package>]] Replace a directory with a symlink. Must be called in preinst, postinst and postrm. help -?, --help Show this help message. --version Show the version. END } # Main code set -e PROGNAME=$(basename "$0") version="1.21.22" DPKG_ROOT=${DPKG_ROOT:+$(realpath "$DPKG_ROOT")} # Remove default root dir. if [ "$DPKG_ROOT" = "/" ]; then DPKG_ROOT="" fi export DPKG_ROOT PKGDATADIR_DEFAULT='/usr/share/dpkg' PKGDATADIR="${DPKG_DATADIR:-$PKGDATADIR_DEFAULT}" # shellcheck source=src/sh/dpkg-error.sh . "$PKGDATADIR/sh/dpkg-error.sh" setup_colors command="$1" [ $# -gt 0 ] || badusage "missing command" shift case "$command" in supports) case "$1" in rm_conffile|mv_conffile|symlink_to_dir|dir_to_symlink) code=0 ;; *) code=1 ;; esac if [ -z "$DPKG_MAINTSCRIPT_NAME" ]; then warning "environment variable DPKG_MAINTSCRIPT_NAME missing" code=1 fi if [ -z "$DPKG_MAINTSCRIPT_PACKAGE" ]; then warning "environment variable DPKG_MAINTSCRIPT_PACKAGE missing" code=1 fi exit $code ;; rm_conffile) rm_conffile "$@" ;; mv_conffile) mv_conffile "$@" ;; symlink_to_dir) symlink_to_dir "$@" ;; dir_to_symlink) dir_to_symlink "$@" ;; _internal_pkg_must_own_file) # This is an internal command, must not be used outside this program. internal_pkg_must_own_file "$@" ;; --help|help|-?) usage ;; --version) cat <<END Debian $PROGNAME version $version. This is free software; see the GNU General Public License version 2 or later for copying conditions. There is NO warranty. END ;; *) badusage "command $command is unknown Hint: upgrading dpkg to a newer version might help." esac exit 0
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