Show all shell resource limits
Build a paste-ready command, then review its compatibility and effects before running it.
read-onlyno known side effects Compatibility
LinuxVerified for Linux using posix, bash, zsh syntax.
Operational knowledgereview due 2027-01-20
Requirementsulimitulimit must be installed and available on PATH.
Version supportulimit Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signalsreal-time non-blocking time (microseconds, -R) unlimitedRepresentative successful output; values vary with the selected target and system state.
Known errorsulimit: command not foundulimit is missing or is not available on PATH.
Verifyulimit -aThe output matches the expected target and exits without an error.Rollback noteNot required: this command is read-only and does not change system state.
Command breakdown
01ulimitCommandRuns the ulimit stage of this one-liner.
02-aOptionConfigures ulimit with the -a option.
Example output
real-time non-blocking time (microseconds, -R) unlimited
open files (-n) 1024
max user processes (-u) 31245
Illustrative output — exact values vary by system and data.
Official sources