Provided by:
login_4.1.4.2+svn3283-3ubuntu2_i386 
NAZWA
sg - execute command as different group ID
SK/LADNIA
sg [-] [group [-c] command]
OPIS
The sg command works similar to newgrp but accepts a command. The
command will be executed with the /bin/sh shell. With most shells you
may run sg from, you need to enclose multi-word commands in quotes.
Another difference between newgrp and sg is that some shells treat
newgrp specially, replacing themselves with a new instance of a shell
that newgrp creates. This doesn't happen with sg, so upon exit from a
sg command you are returned to your previous group ID.
CONFIGURATION
The following configuration variables in /etc/login.defs change the
behavior of this tool:
SYSLOG_SG_ENAB (boolean)
Enable "syslog" logging of sg activity.
PLIKI
/etc/passwd
Informacja o kontach uytkownikow.
/etc/shadow
Informacje chronione o uytkownikach.
/etc/group
Informacje o grupach uytkownikow.
/etc/gshadow
Informacje chronione o grupach uytkownikow.
ZOBACZ TAKE
id(1), login(1), newgrp(1), su(1), gpasswd(1), group(5), gshadow(5).
Polecenia uytkownikow 06/24/2011 SG(1)