show last commands executed in reverse
lastcomm gives information on previously
executed commands. With no arguments,
prints information about all the commands recorded during the current
accounting file's lifetime.
The options are as follows:
- Read from file rather than the default accounting file.
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:
- Name of the user who ran the process.
- Flags, as accumulated by the system's accounting facilities.
- Command name under which the process was called.
- Amount of CPU time used by the process (in seconds).
- Time the process started.
- Elapsed time of the process.
The flags are encoded as follows: ‘S’ indicates the command was executed by the superuser, ‘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, ‘X’ indicates the command was terminated with a signal, ‘P’ indicates the command was terminated due to a pledge(2) violation, and ‘T’ indicates the command did a memory access violation detected by a processor trap.
- default accounting file
last(1), sigvec(3), acct(5), core(5), accton(8)
lastcomm command appeared in