Reference

lastcomm(1)

show last commands executed in reverse order

NAME

lastcomm – show last commands executed in reverse order

SYNOPSIS

lastcomm [-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.

The options are as follows:

-f file

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:

B

The command executed an indirect branch to a location that did not start with a ‘BTI’ instruction, and terminated with signal SIGILL, code ILL_BTCFI.

D

The command terminated with the generation of a core file.

F

The command ran after a fork, but without a following execve(2).

M

The command did a system call from writable memory or the stack pointer was not in stack memory.

P

The command was terminated due to a pledge(2) violation.

S

The command tried to execute a system call from the wrong system call instruction, see pinsyscalls(2).

T

The command did a memory access violation detected by a processor trap.

U

The command tried a file access that was prevented by unveil(2).

X

The command was terminated with a signal.

FILES

/var/account/acct

default accounting file

SEE ALSO

last(1), signal(3), acct(5), core(5), accton(8)

HISTORY

The lastcomm command appeared in 3.0BSD.

History