Edit: /usr/share/doc/pam/txts/README.pam_limits (2421B)
pam_limits -- PAM module to limit resources
--------------------------------------------------------------------------
DESCRIPTION
The pam_limits PAM module sets limits on the system resources that can be
obtained in a user-session. Users of uid=0 are affected by this limits,
too.
By default limits are taken from the /etc/security/limits.conf config
file. Then individual *.conf files from the /etc/security/limits.d/
directory are read. The files are parsed one after another in the order of
"C" locale. The effect of the individual files is the same as if all the
files were concatenated together in the order of parsing. If a config file
is explicitly specified with a module option then the files in the above
directory are not parsed.
The module must not be called by a multithreaded application.
If Linux PAM is compiled with audit support the module will report when it
denies access based on limit of maximum number of concurrent login
sessions.
OPTIONS
conf=/path/to/limits.conf
Indicate an alternative limits.conf style configuration file to
override the default.
debug
Print debug information.
set_all
Set the limits for which no value is specified in the
configuration file to the one from the process with the PID 1.
utmp_early
Some broken applications actually allocate a utmp entry for the
user before the user is admitted to the system. If some of the
services you are configuring PAM for do this, you can selectively
use this module argument to compensate for this behavior and at
the same time maintain system-wide consistency with a single
limits.conf file.
noaudit
Do not report exceeded maximum logins count to the audit
subsystem.
EXAMPLES
These are some example lines which might be specified in
/etc/security/limits.conf.
* soft core 0
* hard nofile 512
@student hard nproc 20
@faculty soft nproc 20
@faculty hard nproc 50
ftp hard nproc 0
@student - maxlogins 4
:123 hard cpu 5000
@500: soft cpu 10000
600:700 hard locks 10