Connection accounting utilities
1 Environment #
This document applies to the following products and product versions:
SUSE Linux Enterprise Server 15 SP3, 15 SP2, 15 SP1, 15 GA, 12 SP5, 12 SP4, 12 SP3
SUSE Linux Enterprise Server for SAP Applications 15 SP3, 15 SP2, 15 SP1, 15 GA, 12 SP5, 12 SP4, 12 SP3
SUSE Linux Enterprise High Availability Extension 15 SP3, 15 SP2, 15 SP1, 15 GA, 12 SP5, 12 SP4, 12 SP3
SUSE Linux Enterprise High Performance Computing 15 SP3, 15 SP2, 15 SP1, 15 GA
SUSE Linux Enterprise Desktop 15 SP3, 15 SP2, 15 SP1, 15 GA, 12 SP5, 12 SP4, 12 SP3
SUSE Linux Enterprise Real Time 15 SP3, 15 SP2, 15 SP1, 15 GA, 12 SP5, 12 SP4, 12 SP3
2 Connection accounting commands #
The GNU accounting utilities provide useful information about system usage, such as user logins and logouts, programs executed, and system resources used.
who
Lists currently logged in users.
w
Shows who is logged in and what they are doing.
last
Shows a list of the most recent logged-in users, including login time, logout time, and their IP addresses.
lastb
Same as
last
, except that it shows the contents of/var/log/btmp
, which contains all the bad login attempts.lastlog
Reports data maintained in
/var/log/lastlog
, which is a record of the last time a user logged in.ac
Available after installing the acct package. Prints the connect time in hours on a per-user basis. This command reads
/var/log/wtmp
.dump-utp
Converts raw data from
/var/run/utmp
or/var/log/wtmp
into ASCII-parseable format.
You can also check the /var/log/messages
file, or the output
of journalctl
.