tar change user?

dfw123 · 05-09-2007, 03:56 PM

Hello!

I login as root when I untar a file,it untar all the files to a folder but that folder's user and group is not root, it changed to other user. why this happen? thanks.

Matir · 05-09-2007, 04:36 PM

Probably because the tar file specifies a user and group.

Quote:

Originally Posted by tar(1)

-o, --no-same-owner
extract files with owner set to current user (the default for
non-root users)

dfw123 · 05-09-2007, 05:05 PM

I man tar on fedora 6, it said:

-o, --old-archive, --portability
write a V7 format archive, rather than ANSI format

-O, --to-stdout
extract files to standard output

I command like this tar -xvzf php5.1.6.tar.gz

output :

drwxr-xr-x 14 1002 1002 4096 Aug 23 2006 php-5.1.6

why?

Matir · 05-09-2007, 05:55 PM

Again, the tar file includes the user and group information. If you extract it as root, that will be preserved unless you use the option not to. Check and see if it has --no-same-owner available.

dfw123 · 05-09-2007, 06:21 PM

thanks. I get it work.

dfw123 · 05-10-2007, 02:08 PM

just curious, I downloaded tar file from php website. It should not include any user and group inside. How come the tar file will use my existing user account ,for example john. I deleted user and group called john then it uses 1002 as user and group?

Matir · 05-10-2007, 02:13 PM

The user and group are stored numerically as 1002. It is just coincidence that you had a user and group named john with uid/gid 1002.

dfw123 · 05-10-2007, 02:45 PM

But the tar file that I downloaded from website should not include a user and group, right? and it will automatically choose a user and group?

Thanks again.