Info Catalog coreutils: groups invocation coreutils: User information coreutils: who invocation

coreutils: users invocation

 
 20.5 ‘users’: Print login names of users currently logged in
 ============================================================
 
 ‘users’ prints on a single line a blank-separated list of user names of
 users currently logged in to the current host.  Each user name
 corresponds to a login session, so if a user has more than one login
 session, that user’s name will appear the same number of times in the
 output.  Synopsis:
 
      users [FILE]
 
    With no FILE argument, ‘users’ extracts its information from a
 system-maintained file (often ‘/var/run/utmp’ or ‘/etc/utmp’).  If a
 file argument is given, ‘users’ uses that file instead.  A common choice
 is ‘/var/log/wtmp’.
 
    The only options are ‘--help’ and ‘--version’.  ⇒Common
 options.
 
    The ‘users’ command is installed only on platforms with the POSIX
 ‘<utmpx.h>’ include file or equivalent, so portable scripts should not
 rely on its existence on non-POSIX platforms.
 
    An exit status of zero indicates success, and a nonzero value
 indicates failure.
 

Info Catalog coreutils: groups invocation coreutils: User information coreutils: who invocation