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From: @(#)lastcomm.1 8.1 (Berkeley) 6/6/93
$FreeBSD: releng/10.3/usr.bin/lastcomm/lastcomm.1 235541 2012-05-17 11:10:13Z kib $
.Dd May 17, 2012 .Dt LASTCOMM 1 .Os .Sh NAME .Nm lastcomm .Nd show last commands executed .Sh SYNOPSIS .Nm .Op Fl EScesu .Op Fl f Ar file .Op Cm + Ns Ar format .Op Ar command ...\& .Op Ar user ...\& .Op Ar terminal ...\& .Sh DESCRIPTION The .Nm utility gives information on previously executed commands. With no arguments, .Nm prints information about all the commands recorded during the current accounting file's lifetime.
p The following options are available: l -tag -width indent t Fl E Print the time the process exited. t Fl S Print the time the process started. t Fl c Print the amount of cpu time used by the process. t Fl e Print the amount of elapsed time used by the process. t Fl s Print the amount of system time used by the process. t Fl u Print the amount of user time used by the process. t Fl f Ar file Read from .Ar file rather than the default
a /var/account/acct . If .Ar file is a single dash
q Sq - .Nm reads accounting entries from the standard input. .El
p An operand with a leading plus sign
q Sq + is followed a user-defined format string which specifies the format in which to display the process's start or exit date and time. The format string may contain any of the conversion specifications described in the .Xr strftime 3 manual page, as well as arbitrary text.
p If no options are specified, .Fl cS is assumed. If .Nm is invoked with arguments, only accounting entries with a matching .Ar command name, .Ar user name, or .Ar terminal name are printed. For example:
p .Dl lastcomm a.out root ttyd0
p would produce a listing of all the executions of commands named
a a.out by user .Ar root on the terminal .Ar ttyd0 .
p For each process entry, the following are printed.
p l -bullet -offset indent -compact t The name of the user who ran the process. t Flags, as accumulated by the accounting facilities in the system. t The command name under which the process was called. t The amount of CPU
q Fl c , wall
q Fl e , system
q Fl s , or user
q Fl u time used by the process (in seconds). t The time the process started
q Fl S or exited
q Fl E . .El
p
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
.Xr 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
a core file, and ``X'' indicates the command was terminated with a signal.
p By default, accounting entries are printed going backwards in time, starting from the time .Nm was executed. However, if .Nm reads entries from its standard input, then entries are printed in the order they are read. .Sh FILES l -tag -width /var/account/acct -compact t Pa /var/account/acct default accounting file .El .Sh EXAMPLES The command .Dl lastcomm -Ee will print the exit time and elapsed time of each command logged in
a /var/account/acct , while .Dl tail -f -c 0 /var/account/acct | lastcomm -f - will print details of each terminating command. .Sh SEE ALSO .Xr last 1 , .Xr sigaction 2 , .Xr strftime 3 , .Xr acct 5 , .Xr core 5 .Sh HISTORY The .Nm command appeared in x 3.0 .