lastcomm(1) — Linux manual page


LASTCOMM(1)                General Commands Manual               LASTCOMM(1)

NAME         top

       lastcomm -  print out information about previously executed commands.

SYNOPSIS         top

              [ command-name ...  ]
              [ user-name ...  ]
              [ terminal-name ...  ]
              [ OPTION ... ]

DESCRIPTION         top

       lastcomm prints out information about previously executed commands.
       If no arguments are specified, lastcomm will print info about all of
       the commands in acct (the record file).  If called with one or more
       of command-name, user-name, or terminal-name, only records containing
       those items will be displayed.  For example, to find out which users
       used command `a.out' and which users were logged into `tty0', type:
                                lastcomm a.out tty0

       This will print any entry for which `a.out' or `tty0' matches in any
       of the record's fields (command, name, or terminal).  If you want to
       find only items that match *all* of the arguments on the command
       line, you must use the '-strict-match' option.  For example, to list
       all of the executions of command a.out by user root on terminal tty0,
          lastcomm --strict-match --command a.out --user root --tty tty0

       The order of the arguments is not important.

       For each entry the following information is printed:
          + command name of the process
          + flags, as recorded by the system accounting routines:
               S -- command executed by super-user
               F -- command executed after a fork but without a following
               C -- command run in PDP-11 compatibility mode (VAX only)
               D -- command terminated with the generation of a core file
               X -- command was terminated with the signal SIGTERM
          + the name of the user who ran the process
          + time the process started

OPTIONS         top

              Print only entries that match *all* of the arguments on the
              command line.
              Print control characters.
       --user name
              List records for user with name.  This is useful if you're
              trying to match a username that happens to be the same as a
              command (e.g., ed ).
       --command name
              List records for command name.
       --tty name
              List records for tty name.
              Read file forwards instead of backwards. This avoids trying to
              seek on the file and can be used to read from a pipe. This
              must be specified prior to any -f arguments.
       -f filename, --file filename
              Read from the file filename instead of acct.  A filename of
              "-" will result in reading from stdin. This must either be the
              first -f option, or --forwards must precede all -f options.
       --ahz hz
              Use this flag to tell the program what AHZ should be (in
              hertz).  This option is useful if you are trying to view an
              acct file created on another machine which has the same byte
              order and file format as your current machine, but has a
              different value for AHZ.
       -p, --show-paging
              Print paging statistics.
       --pid  Show PID and PPID of the process if acct version 3 format is
              supported by kernel.
       --pid  Add pid of the process and pid of the process parent to the
              output (pid is the last but one and parent pid the last
              column).  These values are shown only when they are generated
              by acct function (depends on the version of kernel)
              Print verbose internal information.
       -V, --version
              Print the version number of lastcomm.
       -h, --help
              Prints the usage string and default locations of system files
              to standard output and exits.

FILES         top

              The system wide process accounting file. See acct(5) (or
              pacct(5)) for further details.  /var/log/account
                     This directory contains pacct files which contain the
                     binary process accounting data as written by the

AUTHOR         top

       The GNU accounting utilities were written by Noel Cragg
       <>. The man page was adapted from the accounting
       texinfo page by Susan Kleinmann <>.

SEE ALSO         top

       last(1), acct(5)

COLOPHON         top

       This page is part of the psacct (process accounting utilities)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for
       this manual page, see ⟨⟩.  This page
       was obtained from the tarball acct-6.6.4.tar.gz fetched from
       ⟨⟩ on 2020-09-18.  If you discover any
       rendering problems in this HTML version of the page, or you believe
       there is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

                               1995 October 31                   LASTCOMM(1)

Pages that refer to this page: acct(5)dump-acct(8)dump-utmp(8)