Search compressed logs

grep inside .gz files without manual decompression

zgrep -i 'error' /var/log/syslog.*.gz
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linux133 commands
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linuxlogs

More linux commands

  • Rotate logs manually
    logrotate -f /etc/logrotate.conf

    Force log rotation regardless of schedule

  • List cron jobs system-wide
    for u in $(cut -f1 -d: /etc/passwd); do crontab -l -u $u 2>/dev/null | grep -v '^#' | sed "s|^|$u: |"; done

    Print active cron lines for every user

  • Cron expression tester
    systemd-analyze calendar '*/5 * * * *'

    Parse and show next 5 trigger times for a cron expression

  • Redirect stderr to file
    command > /tmp/out.log 2> /tmp/err.log

    Split stdout and stderr into separate files

  • Capture both streams
    command 2>&1 | tee /tmp/all.log

    Redirect stdout+stderr to file and screen simultaneously

all 133 linux commands