LASTCOMM(1) BSD General Commands Manual LASTCOMM(1)NAMElastcomm — show last commands executed
SYNOPSISlastcomm [-EScesu] [-f file] [command ...] [user ...] [terminal ...]
The lastcomm utility gives information on previously executed commands.
With no arguments, lastcomm prints information about all the commands
recorded during the current accounting file's lifetime.
The following options are available:
-E Print the time the process exited.
-S Print the time the process started.
-c Print the amount of cpu time used by the process.
-e Print the amount of elapsed time used by the process.
-s Print the amount of system time used by the process.
-u Print the amount of user time used by the process.
Read from file rather than the default /var/account/acct. If
file is a single dash (‘-’) lastcomm reads accounting entries
from the standard input.
If no options are specified, -cS is assumed. If lastcomm is invoked with
arguments, only accounting entries with a matching command name, user
name, or terminal name are printed. 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 name of the user who ran the process.
· Flags, as accumulated by the accounting facilities in the sys‐
· The command name under which the process was called.
· The amount of CPU (-c), wall (-e), system (-s), or user (-u)
time used by the process (in seconds).
· The time the process started (-S) or exited (-E).
The flags are encoded as follows: ``S'' indicates the command was exe‐
cuted by the super-user, ``F'' indicates the command ran after a fork,
but without a following exec(3), ``D'' indicates the command terminated
with the generation of a core file, and ``X'' indicates the command was
terminated with a signal.
By default, accounting entries are printed going backwards in time,
starting from the time lastcomm was executed. However, if lastcomm reads
entries from its standard input, then entries are printed in the order
they are read.
/var/account/acct default accounting file
will print the exit time and elapsed time of each command logged in
tail -f -c 0 /var/account/acct | lastcomm-f -
will print details of each terminating command.
SEE ALSOlast(1), sigvec(2), acct(5), core(5)HISTORY
The lastcomm command appeared in 3.0BSD.
BSD May 14, 2007 BSD