Read network device history
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
Requirementssarsar must be installed and available on PATH.
Version supportsar Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signals12:10:01 AM IFACE rxpck/s txpck/s rxkB/s txkB/s %ifutilRepresentative successful output; values vary with the selected target and system state.
Known errorssar: command not foundsar is missing or is not available on PATH.
Verifysar -n DEVThe 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
01sarCommandRuns the sar stage of this one-liner.
02-nOptionApplies the command-specific numeric, dry-run, or non-resolving mode.
03DEVArgumentPasses DEV to sar.
Example output
12:10:01 AM IFACE rxpck/s txpck/s rxkB/s txkB/s %ifutil
12:10:01 AM eth0 120.0 98.0 84.2 41.7 0.01
Illustrative output — exact values vary by system and data.
Official sources