Configurator for pam_limits This module configures limits for system resources available to the user, such as CPU usage, memory, etc. 11.. DDoommaaiinn This may be an user name, a group name (syntax: @groupname) or an asterisk meaning every domain. 22.. TTyyppee It can be hard or soft. Hard limits are the ones defined by the superuser and imposed by Linux kernel. The user can't change these limits. Soft limits can be changed by the user but can't surpass the hard limits, if defined. 33.. LLiimmiittss Defines what limit is going to be defined. 44.. TToo Defines the limit value. It can be KB, minutes, etc depending on which limit is going to be defined.