Comandos de la terminal/su

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su

[rrc@pridd ~]$ su --help

Usage:
 su [options] [-] [<user> [<argument>...]]

Change the effective user ID and group ID to that of <user>.
A mere - implies -l.  If <user> is not given, root is assumed.

Options:
 -m, -p, --preserve-environment  do not reset environment variables
 -g, --group <group>             specify the primary group
 -G, --supp-group <group>        specify a supplemental group

 -, -l, --login                  make the shell a login shell
 -c, --command <command>         pass a single command to the shell with -c
 --session-command <command>     pass a single command to the shell with -c
                                   and do not create a new session
 -f, --fast                      pass -f to the shell (for csh or tcsh)
 -s, --shell <shell>             run <shell> if /etc/shells allows it

 -h, --help     display this help and exit
 -V, --version  output version information and exit

For more details see su(1).

[rrc@pridd ~]$ su --version
su from util-linux 2.24

[rrc@pridd ~]$ su
Password: 
[root@pridd rrc]#

Mirra la carpeta actual
[root@pridd rrc]# pwd
/home/rrc
[root@pridd rrc]# cd
[root@pridd ~]# pwd
/root

Usa ^d o exit para regresar 

[root@pridd rrc]# exit
[rrc@pridd ~]$ 

[rrc@pridd ~]$ su -
Password: 
[root@pridd ~]# 

Mirra la carpeta actual
[root@pridd ~]# pwd
/root

Usa ^d o exit para regresar 

[root@pridd rrc]# exit
[rrc@pridd ~]$ 

[rrc@pridd ~]$ su -
Password: 
[root@pridd ~]# touch DelMe
[root@pridd ~]# ls -al DelMe
-rw-r--r-- 1 root root 0 Mar 27 20:21 DelMe

[rrc@pridd ~]$ su -lg webmin
su: only root can specify alternative groups
[rrc@pridd ~]$ su -g webmin
su: only root can specify alternative groups
[rrc@pridd ~]$ su -
Password: 
[root@pridd ~]# su -lg webmin
[root@pridd ~]# touch DelMe2
[root@pridd ~]# ls -al DelMe2
-rw-r--r-- 1 root webmin 0 Mar 27 20:22 DelMe2

[rrc@pridd ComandosDeLaTerminal]$ rm /root/DelMe*
rm: cannot remove ‘/root/DelMe*’: Permission denied
[rrc@pridd ComandosDeLaTerminal]$ su -c rm /root/DelMe*
su: user /root/DelMe* does not exist
[rrc@pridd ComandosDeLaTerminal]$ su -c "rm /root/DelMe*"
Password: 
[rrc@pridd ComandosDeLaTerminal]$ su -c "ls -al /root/DelMe*"
Password: 
ls: cannot access /root/DelMe*: No such file or directory