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lastcomm(1) [netbsd man page]

LASTCOMM(1)						    BSD General Commands Manual 					       LASTCOMM(1)

lastcomm -- show last commands executed in reverse order SYNOPSIS
lastcomm [-w] [-f file] [command ...] [user ...] [terminal ...] DESCRIPTION
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. Option: -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 terminal ttyd0. 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 gener- ated by an older version of the system. FILES
/var/account/acct Default accounting file. SEE ALSO
last(1), sigaction(2), acct(5), core(5) HISTORY
The lastcomm command appeared in 3.0BSD. BSD
January 31, 2012 BSD

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LASTCOMM(1)						      General Commands Manual						       LASTCOMM(1)

lastcomm - print out information about previously executed commands. SYNOPSIS
lastcomm [ command-name ... ] [ user-name ... ] [ terminal-name ... ] [ OPTION ... ] DESCRIPTION
lastcomm prints out information about previously executed commands. 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, only 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 example, 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 OPTIONS
--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 options. --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 cre- ated 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 --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. FILES
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. AUTHOR
The GNU accounting utilities were written by Noel Cragg <>. The man page was adapted from the accounting texinfo page by Susan Kleinmann <>. SEE ALSO
last(1), acct(5) 1995 October 31 LASTCOMM(1)
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