lastcomm1

Usage

Overview

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