Set group seting to multiple files
Good afternoon everyone :) I expected a little problem, i have got a lot of files (Mp3s) organized in rep with sub rep, and i want to set a exec authorisation for a user. I know how to set it to a unique file, but there are more than one thousand files, so i wanted to do for each Mp3s (and to sub dir too) in only one command :) Maybe someone can help :))) Thanks Pierre Dupuis [EMAIL PROTECTED] PS : Thanks for all previous reply, they help me a lot -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
OK ! I'm sorry to be a newbie :// I need more explanation.. I will be more explicit I've got some files owned by root and part as root group. First i want to made them audio group. Then i want to set a read permission for group audio on these files. I have look at the man chmod but it is not very limpid. Maybe someone can help me :) Pierre Dupuis [EMAIL PROTECTED] dizma wrote: chmod 777 * rgds NN - Original Message - From: Pierre Dupuis [EMAIL PROTECTED] To: Mailing list utilisateurs Debian [EMAIL PROTECTED] Sent: Thursday, September 12, 2002 2:19 PM Subject: Set group seting to multiple files Good afternoon everyone :) I expected a little problem, i have got a lot of files (Mp3s) organized in rep with sub rep, and i want to set a exec authorisation for a user. I know how to set it to a unique file, but there are more than one thousand files, so i wanted to do for each Mp3s (and to sub dir too) in only one command :) Maybe someone can help :))) Thanks Pierre Dupuis [EMAIL PROTECTED] PS : Thanks for all previous reply, they help me a lot -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
also sprach Pierre Dupuis [EMAIL PROTECTED] [2002.09.12.1319 +0200]: I expected a little problem, i have got a lot of files (Mp3s) organized in rep with sub rep, and i want to set a exec authorisation for a user. I know how to set it to a unique file, but there are more than one thousand files, so i wanted to do for each Mp3s (and to sub dir too) in only one command :) assuming that your MP3s are in /music/mp3: chgrp -R music /music/mp3 -- this recursively changes the group of the files to 'music' chown -R pierre /music/mp3 -- this recursively changes the owner of the files to 'pierre' these two can be combined: chown -R pierre.music /music/mp3 then you should make them accessible to all in group music: chmod -R o=rwX,g=rX,o= /music/mp3 and you are done. one warning: NEVER, i repeat *N*E*V*E*R* use the -R flag to chmod/chgrp/chown if the final argument is not a directory. for instance chown -R pierre /music/mp3/* will eventually change *your entire filesystem* to be owned by pierre! -- martin; (greetings from the heart of the sun.) \ echo mailto: !#^.*|tr * mailto:; net@madduck when a woman marries again it is because she detested her first husband. when a man marries again it is because he adored his first wife. women try their luck; men risk theirs. -- oscar wilde msg01949/pgp0.pgp Description: PGP signature
Re: Set group seting to multiple files
also sprach martin f krafft [EMAIL PROTECTED] [2002.09.12.1333 +0200]: chmod -R o=rwX,g=rX,o= /music/mp3 ^ u=rwX -- martin; (greetings from the heart of the sun.) \ echo mailto: !#^.*|tr * mailto:; net@madduck micro$oft dns service terminates abnormally when it receives a response to a dns query that was never made. fix information: run your dns service on a different platform. -- bugtraq msg01953/pgp0.pgp Description: PGP signature
Re: Set group seting to multiple files
martin f krafft wrote: one warning: NEVER, i repeat *N*E*V*E*R* use the -R flag to chmod/chgrp/chown if the final argument is not a directory. for instance chown -R pierre /music/mp3/* will eventually change *your entire filesystem* to be owned by pierre! Can someone else confirm this because this doesn't make any sense to me and I have never encountered it. I just tried a couple of tests trying to confirm this and was unable to reproduce it. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
On Thu, Sep 12, 2002 at 01:49:33PM +0200, Pierre Dupuis wrote: OK ! I'm sorry to be a newbie :// I need more explanation.. I will be more explicit I've got some files owned by root and part as root group. First i want to made them audio group. Then i want to set a read permission for group audio on these files. I have look at the man chmod but it is not very limpid. Maybe someone can help me :) Pierre Dupuis [EMAIL PROTECTED] snip chgrp audio file1 file2 ... OR chgrp -R audio dir This will change the group from root (or whatever) to audio - the first will do files, the second directories. However, you need to be the owner in order to make any ownership/permission changes. chmod g+r file1 file2 ... OR chmod -R g+r dir This will give group read permissions - the first for individual files, the second for whole directories. Hope that's limpid enough for you, pierre ;) Keith -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
On Thu, Sep 12, 2002 at 11:28:00AM -0400, Travis Crump wrote:
martin f krafft wrote:
one warning:
NEVER, i repeat *N*E*V*E*R* use the -R flag to chmod/chgrp/chown if
the final argument is not a directory. for instance
chown -R pierre /music/mp3/*
will eventually change *your entire filesystem* to be owned by
pierre!
Can someone else confirm this because this doesn't make any sense to me
and I have never encountered it. I just tried a couple of tests trying
to confirm this and was unable to reproduce it.
I did this once, then panicked and halted the process when I heard
a lot of disk activity. The problem is (I think) that the wildcard
matches the .. file and the process recurses back into the parent
directory, etc.
I'd recommend using find for this sort of thing, as it allows you to
select files and directories with a lot of flexibility, view them
before doing anything, then do the job a file at a time.
$ find /music/mp3 # ... view check the list of files
$ find /music/mp3 -exec echo chown -R pierre {} \; # ... check commands
$ find /music/mp3 -exec chown -R pierre {} \; # ... do it
This is probably a lot slower than using recurse options in commands,
but I feel it can be safer.
--
Ken Irving [EMAIL PROTECTED]
--
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Re: Set group seting to multiple files
On Thu, Sep 12, 2002 at 11:28:00AM -0400, Travis Crump wrote: martin f krafft wrote: one warning: NEVER, i repeat *N*E*V*E*R* use the -R flag to chmod/chgrp/chown if the final argument is not a directory. for instance chown -R pierre /music/mp3/* will eventually change *your entire filesystem* to be owned by pierre! Can someone else confirm this because this doesn't make any sense to me and I have never encountered it. I just tried a couple of tests trying to confirm this and was unable to reproduce it. It doesn't make any sense to me either. You can see what chown is doing by adding the -v flag, and: [cjwatson@riva ~/tmp]$ sudo chown -v -R www-data svn-dump.* changed ownership of `svn-dump.142' to www-data changed ownership of `svn-dump.149' to www-data There's other stuff under there, so I don't understand why -R on a file could be bad. -- Colin Watson [[EMAIL PROTECTED]] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
also sprach Colin Watson [EMAIL PROTECTED] [2002.09.12.1809 +0200]: It doesn't make any sense to me either. You can see what chown is doing by adding the -v flag, and: [cjwatson@riva ~/tmp]$ sudo chown -v -R www-data svn-dump.* changed ownership of `svn-dump.142' to www-data changed ownership of `svn-dump.149' to www-data There's other stuff under there, so I don't understand why -R on a file could be bad. -R on files isn't, but -R with wildcards is just because it's too easy to include .. in the wildcard. note that my original warning was intentionally left vague because i didn't want to flood the asker with complicated information. having now checked it (chmod -R u+r ~/* is a non-destructive way in 98% of the cases), it seems that things changed. the reason i warned was because i once fell victim to this, so i have engraved in my brain that -R and * should not be used. from what i can tell, i have been surfing happily, never using that combination, for the past 6 years or so. -- martin; (greetings from the heart of the sun.) \ echo mailto: !#^.*|tr * mailto:; net@madduck first snow, then silence. this thousand dollar screen dies so beautifully. msg02012/pgp0.pgp Description: PGP signature
Re: Set group seting to multiple files
On Thu, Sep 12, 2002 at 05:20:48PM +0100, Colin Watson wrote: On Thu, Sep 12, 2002 at 08:07:24AM -0800, Ken Irving wrote: I did this once, then panicked and halted the process when I heard a lot of disk activity. The problem is (I think) that the wildcard matches the .. file and the process recurses back into the parent directory, etc. '*' doesn't match .. in normal (POSIX) shells. '.*' does, though. I'm pretty sure I used the latter construct, since (I dimly recall) I was trying to operate on files with a '.' in the name. Thanks for the clarification. This defuses martin's warning to an extent, but it's a gotcha that got me, and a learning experience. -- Ken Irving [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
martin f krafft [EMAIL PROTECTED] writes: having now checked it (chmod -R u+r ~/* is a non-destructive way in 98% of the cases), it seems that things changed. the reason i warned chmod -R u+r ~/* is always (and has always been) non-destructive. But it's not complete, since it won't chmod dotfiles. This leads people to try chmod -R u+r ~/* ~/.* which _is_ destructive. In a case like that, it's always much better to do chmod -R u+r ~ which works correctly. -- Alan Shutko [EMAIL PROTECTED] - In a variety of flavors! Source file - One which was appropriated from the competitors. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
martin f krafft [EMAIL PROTECTED] writes: /music/mp3/* includes .. and since you are doing things the recursive way... No, it doesn't. Try echo * somewhere. -- Alan Shutko [EMAIL PROTECTED] - In a variety of flavors! Doubt grows with knowledge -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Set group seting to multiple files
also sprach Alan Shutko [EMAIL PROTECTED] [2002.09.12.2003 +0200]: chmod -R u+r ~/* ~/.* which _is_ destructive. not with the zsh shell: fishbowl:~/tmp chmod -vR u+r .* | head zsh: no matches found: .* (the dir contains no dotfiles.) -- martin; (greetings from the heart of the sun.) \ echo mailto: !#^.*|tr * mailto:; net@madduck fermentation fault. coors dumped. msg02031/pgp0.pgp Description: PGP signature
