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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | AUTHOR | SEE ALSO | COLOPHON |
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LASTCOMM(1) General Commands Manual LASTCOMM(1)
lastcomm - print out information about previously executed
commands.
lastcomm
[ command-name ... ]
[ user-name ... ]
[ terminal-name ... ]
[ OPTION ... ]
lastcomm prints out information about previously executed com‐
mands. 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, on‐
ly 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 exam‐
ple, to list all of the executions of command a.out by user root
on terminal tty0, type:
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
exec
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
--strict-match
Print only entries that match *all* of the arguments on the
command line.
--print-controls
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.
--forwards
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 op‐
tions.
--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 gener‐
ated by acct function (depends on the version of kernel)
--debug
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.
acct
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
kernel.
The GNU accounting utilities were written by Noel Cragg
<noel@gnu.ai.mit.edu>. The man page was adapted from the account‐
ing texinfo page by Susan Kleinmann <sgk@sgk.tiac.net>.
last(1), acct(5)
This page is part of the psacct (process accounting utilities)
project. Information about the project can be found at
⟨http://www.gnu.org/software/acct/⟩. If you have a bug report for
this manual page, see ⟨http://www.gnu.org/software/acct/⟩. This
page was obtained from the tarball acct-6.6.4.tar.gz fetched from
⟨http://ftp.gnu.org/gnu/acct/⟩ on 2025-08-11. 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 man-pages@man7.org
1995 October 31 LASTCOMM(1)
Pages that refer to this page: acct(5), dump-acct(8), dump-utmp(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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