LASTCOMM(1) BSD General Commands Manual LASTCOMM(1)
lastcomm -- show last commands executed in reverse order
lastcomm [-w] [-f file] [command ...] [user ...] [terminal ...]
lastcomm gives information on previously executed commands. With no arguments, lastcomm
prints information about all the commands recorded during the current accounting file's
-f file Read from file rather than the default accounting file.
-w Use as many columns as needed to print the output instead of limiting it to 80.
If called with arguments, only accounting entries with a matching command name, user name,
or terminal name are printed. So, for example:
lastcomm a.out root ttyd0
would produce a listing of all the executions of commands named a.out by user root on the
For each process entry, the following are printed.
o The name of the user who ran the process.
o Flags, as accumulated by the accounting facilities in the system.
o The command name under which the process was called.
o The amount of cpu time used by the process (in seconds).
o The time the process started.
o The elapsed time of the process.
The flags are encoded as follows: ``S'' indicates the command was executed by the super-
user, ``F'' indicates the command ran after a fork, but without a following exec(3), ``C''
indicates the command was run in PDP-11 compatibility mode (VAX only), ``D'' indicates the
command terminated with the generation of a core file, and ``X'' indicates the command was
terminated with a signal.
The ``S'' and ``C'' flags are no longer recorded by the system, but will be reported by
lastcomm when reading from an accounting file generated by an older version of the system.
/var/account/acct Default accounting file.
last(1), sigaction(2), acct(5), core(5)
The lastcomm command appeared in 3.0BSD.
BSD January 31, 2012 BSD