Updated: 2022/Sep/29

Please read Privacy Policy. It's for your privacy.

LASTCOMM(1)General Commands ManualLASTCOMM(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 lifetime.


-f file
Read from file rather than the default accounting file.
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 terminal ttyd0.

For each process entry, the following are printed.

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.


Default accounting file.


last(1), sigaction(2), acct(5), core(5)


The lastcomm command appeared in 3.0BSD.

NetBSDJanuary 31, 2012NetBSD

NetBSD Manual Pages - Top