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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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 Posted: Fri Mar 09, 2007 2:09 am Post subject: useless files cleaner |
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made that to clean unused library & programs i found in my gentoo, it's REALLY dangerous, so don't blame me if... blah blah blah
it's slow (yeah really) as it check if the file belong to a package, if not the file is move to /root/gentootrash.zip
logic is to - check all files in current directory with "equery b filename" to see if file belong to a package, if not file is considered good for trash. At least, revdep-rebuild will stop crying on old forget files you could have...
some notes:
1/ emerge zip gentoolkit
- needed programs
2/ don't run two versions of that program in the same time, as it will use the same tempfile (if you still don't know why, just don't do it)
3/ anyone care to do the same faster?
4/ don't forget, if your system is break by this program, blah blah blah...
5/ i use it in /usr/lib & /usr/bin to remove unwanted libs & programs, but if you do it will also remove programs that have been install by you ! (yeah even this one if you install it in /usr/bin  )
6/ must be run as root (oh yes, re-read the /4 !)
7/ as i said if anything goes wrong, check /root/gentootrash.zip for a backup of the missing file
8/ paranoiacs could add # before the "zip...." line or remove that line to stay calm...
9/ don't run it everywhere, the program consider trash ANYTHING that isn't part of a package !!!
10/ if you still try it, well, i'm sure you understand the 4/ so
not really sure someone could enjoy it, but at least it has work for me, so it might help someone else...
| Code: |
#!/bin/bash
for i in $(ls *);
do
src=$i
echo "checking $i..."
if test -f "$i"; then
equery b "$i" > /var/tmp/mytemp 2<&1
if test -s /var/tmp/mytemp; then
echo "...is used by system"
else
echo "...is a useless file, archiving it"
zip -9 -m /root/gentootrash.zip $i
fi
else
echo "...is not a file"
fi
done
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truc
Advocate
Joined: 25 Jul 2005
Posts: 3199
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| Posted: Fri Mar 09, 2007 8:01 am Post subject: |
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one thing that should drasticaly improve speed is to use qfile(from portage-utils) instead, you can even use the --orphans options which basicaly does the same as you script
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Last edited by truc on Fri Mar 09, 2007 12:40 pm; edited 1 time in total |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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| Posted: Fri Mar 09, 2007 11:43 am Post subject: |
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omg truc you rock 
This is exactly what i was looking for !!!
| Code: |
#!/bin/bash
qfile -o * | zip -y -9 -m /root/gentootrash.zip -@
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swimmer
Veteran
Joined: 15 Jul 2002
Posts: 1330
Location: Netherlands
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| Posted: Sat Mar 10, 2007 11:58 am Post subject: |
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Thank you very much indeed!!!
qfile slipped through my attention :-/
Greetz
swimmer |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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| Posted: Sat Mar 10, 2007 2:54 pm Post subject: |
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 grrr talking about useless tools !
let's see
| Code: |
cd /usr/bin
qfile * -o
i686-pc-linux-gnu-addr2line
i686-pc-linux-gnu-ar
i686-pc-linux-gnu-as
i686-pc-linux-gnu-c++filt
i686-pc-linux-gnu-gprof
i686-pc-linux-gnu-ld
i686-pc-linux-gnu-nm
i686-pc-linux-gnu-objcopy
i686-pc-linux-gnu-objdump
i686-pc-linux-gnu-ranlib
i686-pc-linux-gnu-readelf
i686-pc-linux-gnu-size
i686-pc-linux-gnu-strings
i686-pc-linux-gnu-strip
equery b i686-pc-linux-gnu-ar
[ Searching for file(s) i686-pc-linux-gnu-ar in *... ]
ls ar -l
lrwxrwxrwx 1 root root 20 mar 10 15:25 ar -> i686-pc-linux-gnu-ar
equery b /usr/bin/ar
[ Searching for file(s) /usr/bin/ar in *... ]
sys-devel/binutils-2.15.92.0.2-r1 (/usr/bin/ar -> ../i686-pc-linux-gnu/bin/ar)
ls -l ../i686-pc-linux-gnu/bin/ar
lrwxrwxrwx 1 root root 43 mar 10 15:25 ../i686-pc-linux-gnu/bin/ar -> /usr/i686-pc-linux-gnu/binutils-bin/2.17/ar
ls -l /usr/i686-pc-linux-gnu/binutils-bin/2.17/ar
-rwxr-xr-x 1 root root 53581 mar 10 15:25 /usr/i686-pc-linux-gnu/binutils-bin/2.17/ar
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pff finally found the real ar file
ok see that, stupids tools find that /usr/bin/ar is a link to ../i686-pc-linux-gnu-bin/ar used by binutils
but consider ../i686-pc-linux-gnu/bin/ar is itself not use !!!
result: removing ../i686-pc-linux-gnu/bin/ar should be safe if you trust them, but we won't trust them on such a file that have i686-pc-linux-gnu in its name 
result if you trust em:
| Code: |
rm /usr/bin/i686-pc-linux-gnu-ar
emerge grep
...
rm -f libgreputils.a
ar cru libgreputils.a closeout.o error.o exclude.o hard-locale.o isdir.o obstack.o quotearg.o savedir.o xmalloc.o xstrtol.o xstrtoumax.o
make[3]: ar : commande introuvable
make[3]: *** [libgreputils.a] Erreur 127
make[3]: quittant le répertoire « /var/tmp/portage/sys-apps/grep-2.5.1a-r1/work/grep-2.5.1a/lib »
make[2]: *** [all-recursive] Erreur 1
make[2]: quittant le répertoire « /var/tmp/portage/sys-apps/grep-2.5.1a-r1/work/grep-2.5.1a/lib »
make[1]: *** [all-recursive] Erreur 1
make[1]: quittant le répertoire « /var/tmp/portage/sys-apps/grep-2.5.1a-r1/work/grep-2.5.1a »
make: *** [all] Erreur 2
!!! ERROR: sys-apps/grep-2.5.1a-r1 failed.
Call stack:
...
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see
| Code: | | make[3]: ar : commande introuvable |
what's going wrong ?
Well, following the logic, it seems qfile & equery don't think the file is used by a package because in the package that file isn't present...
package says:
/usr/bin/ar -> ../i686-pc-linux-gnu/bin/ar
but in real it's
/usr/bin/ar -> i686-pc-linux-gnu-ar
i686-pc-linux-gnu-ar -> /usr/i686-pc-linux-gnu/bin/ar
i suppose we could consider it a packager builder bug? |
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swimmer
Veteran
Joined: 15 Jul 2002
Posts: 1330
Location: Netherlands
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| Posted: Sat Mar 10, 2007 3:22 pm Post subject: |
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Hmpf - I ran into the same kind of bugs/problems with a lot of files in /usr/bin :-/
Do you file a bug?
Greetz
swimmer |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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| Posted: Sat Mar 10, 2007 3:24 pm Post subject: |
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| no, you really think we should ? |
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swimmer
Veteran
Joined: 15 Jul 2002
Posts: 1330
Location: Netherlands
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| Posted: Sat Mar 10, 2007 3:30 pm Post subject: |
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| krinn wrote: | | no, you really think we should ? |
I do indeed - it's not about our efforts to remove unused files anymore but about the lacking ability of qfile/equery to recognize and resolve symbolic links. Quoting the man page of qfile:
| Quote: | FINDING FILES OWNERS
This is the default behavior of qfile. It will list the packages which own the files (or directories, or symlinks, or anything else Portage can install) you are querying. |
Doesn't that say that it is able to handle symlinks?
What do you think?
Greetz
swimmer |
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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krinn
Watchman
Joined: 02 May 2003
Posts: 7470
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swimmer
Veteran
Joined: 15 Jul 2002
Posts: 1330
Location: Netherlands
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| Posted: Sat Mar 10, 2007 4:04 pm Post subject: |
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| Thank you |
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