Commands Reference, Volume 3

lastcomm Command

Purpose

Displays information about the last commands executed.

Syntax

lastcomm [ Command ] [ Name ] [ Terminal ]

The lastcomm command displays information, in reverse chronological order, about all previously executed commands that are still recorded in the summary files in the /var/adm/pacct directory. You need to run the /usr/sbin/acct/startup command before you can execute the lastcomm command.

The list the lastcomm command displays can be restricted to:

Commands specified by the Command parameter.
Commands executed by the user specified by the Name parameter.
Commands from the terminal specified by the Terminal parameter.
A terminal can be named fully or abbreviated as a tty. For example, you can specify either the tty0 terminal or the 0 terminal.

For each process, the following information is displayed:

The name of the user who ran the process.

Any flags the accounting facilities collected when the command executed. The following are valid flags:

S	The root user executed the command.
F	The command ran after a fork, but without a following subroutine.
C	The command ran in PDP-11 compatibility mode.
D	The command terminated with the generation of a core file.
X	The command was terminated with a signal.

The name of the command under which the process was called.
The seconds of CPU time used by the process.
The time the process was started.

Examples

To display information about all previously executed commands recorded in the /var/adm/pacct file, enter:
```
lastcomm
```
To display information about commands named a.out executed by the root user on the ttyd0 terminal, enter:
```
lastcomm a.out root ttyd0
```

Files

/usr/bin/lastcomm	Contains the lastcomm command.
/var/adm/pacct	The directory that contains the current accounting summary files.

Related Information

The acctcms command.

For more information about the Accounting System, the preparation of daily and monthly reports, and the accounting files, see the Accounting Overview in AIX 5L Version 5.1 System Management Concepts: Operating System and Devices.

Setting Up an Accounting System in AIX 5L Version 5.1 System Management Guide: Operating System and Devices describes the steps you must take to establish an accounting system.