Date & Time
SH · System Infosyntax
date [+format]example
date
date '+%Y-%m-%d %H:%M:%S'
date -d '+7 days' '+%Y-%m-%d'
date -uoutput
Sat Apr 4 14:22:01 UTC 2026
2026-04-04 14:22:01
2026-04-11Note Common format tokens: %Y (year), %m (month), %d (day), %H (hour), %M (minute), %S (second), %s (Unix epoch). -d adjusts the date (GNU only; on macOS use -v). -u outputs UTC. Useful for timestamped filenames: backup_$(date +%Y%m%d_%H%M%S).tar.gz.