Gerard Beekmans wrote:
> Richard A Downing wrote:
>> I just built the cross-lfs book, and noticed that the version of su
>> installed comes from shadow. This version doesn't support -c, which IMO
>> makes it useless. The version built in coreutils is the one I'm used to.
>
> The shadow version of "su" does support the -c option providing you an
> option to pass command line arguments to 'su.'
>
> From its man page (based on shadow-4.0.14):
>
> Additional arguments may be provided after the username, in which case
> they are supplied to the user´s login shell. In particular, an argument
> of -c will cause the next argument to be treated as a command by most
> command interpreters. The command will be executed by the shell
> specified in /etc/passwd for the target user.
>
> And to demonstrate it works as advertised:
>
> [EMAIL PROTECTED]:~$ touch /root/testfile
> touch: cannot touch `/root/testfile': Permission denied
> [EMAIL PROTECTED]:~$ su -c "touch /root/testfile"
> Password: ************
>
> And '/root/testfile' is created after running this.
>
> I believe "su" from the shadow package does work as expected, unless I
> totally missed something, Richard?
>
Gerard,
If this behaviour is 4.0.14 then you have a different one to me!
I suspect this is 4.0.13 - and that does work.
[EMAIL PROTECTED]:/sources/shadow-4.0.14/src$ touch /root/thing
touch: cannot touch `/root/thing': Permission denied
[EMAIL PROTECTED]:/sources/shadow-4.0.14/src$ ./su -c "touch /root/thing"
/sources/shadow-4.0.14/src/.libs/lt-su: invalid option -- c
Usage: su [options] [login]
Options:
-h, --help display this help message and exit
-, -l, --login make the shell a login shell
-m, -p,
--preserve-environment do not reset environment variables, and keep
the same shell
-s, --shell SHELL use SHELL instead of the default in passwd
[EMAIL PROTECTED]:/sources/shadow-4.0.14/src$
R.
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