12-06-2001
Capturing cli Program output
A few years ago I took a C programming class and used both Linux and FreeBSD as my operating systems and gcc as the compiler. I ran a Command-line utility to to capture what happened as I ran the code, the output was saved to a file that I specified when I ran the utility command (that I can't remember the name of
). The file I then printed and turned in as results to my instructor. I am enrolling in another programming class and I can't remember what the command was I used to capture the I/O. I appreciate any help, Thanks.
Chris
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LASTCOMM(1) BSD General Commands Manual LASTCOMM(1)
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.
Option:
-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.
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.
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
December 22, 2006 BSD