Show per-disk counters with vmstat
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
Requirementsvmstatvmstat must be installed and available on PATH.
Version supportvmstat Current supported releasesVerified for linux using posix, bash, zsh syntax; consult compatibility notes for platform-specific differences.
Expected signalsdisk- ------------reads------------ ------------writes-----------Representative successful output; values vary with the selected target and system state.
Known errorsvmstat: command not foundvmstat is missing or is not available on PATH.
Verifyvmstat -dThe 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
01vmstatCommandRuns the vmstat stage of this one-liner.
02-dOptionConfigures vmstat with the -d option.
Example output
disk- ------------reads------------ ------------writes-----------
sda 18231 204 913442 28312 11902 844 621382 18233
Illustrative output — exact values vary by system and data.
Official sources