lastcomm - show last commands executed in reverse order [-EScestu] [-f file] [command ...] [user ...] [terminal ...] gives information on previously executed commands. With no arguments, prints information about all the commands recorded during the current accounting file's lifetime. The following options are available: Print the time the process exited. Print the time the process started. Print the amount of cpu time used by the process. Print the amount of elapsed time used by the process. Print the amount of system time used by the process. Produce output in time machine format: a portable, self-documenting file format (see tm-format(5)) that contains all accounting record fields. The command name. Flags accumulated by the accounting system. The numerical user ID. The numerical group ID. The controlling terminal, given as minor, major device numbers or given as ``__'' for processes without controlling terminal. User-mode CPU time in seconds. Kernel-mode CPU time in seconds. Elapsed time in seconds. Amount of memory used (FreeBSD, BSD/OS, SunOS 4 and Solaris 2). Character device I/O (SunOS 4 and Solaris 2). Block device I/O (FreeBSD, BSD/OS, SunOS 4 and Solaris 2). Page fault statistics (Linux). Page fault statistics (Linux). Process exit status (Linux). Print the amount of user time used by the process. Read from rather than the default /var/account/acct. 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 system. 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 executed by the super-user, ``F'' indicates the command ran after a fork, but without a following exec , ``D'' indicates the command terminated with the generation of a core file, and ``X'' indicates the command was terminated with a signal. /var/account/acct, Default accounting file. last(1), sigvec(2), acct(5), core(5) tm-format(5) The command appeared in 3.0BSD.