Unix command reference

Stream processor for field extraction and formatting.

Change directories safely and predictably.

Modify file permissions using symbolic or numeric modes.

Change file ownership and group assignments.

Transfer data with URLs for HTTP, APIs, and debugging.

Search filesystems with precise filters and actions.

Search text streams using patterns and regular expressions.

Send signals to processes for graceful or forced termination.

List directory contents with precise filtering and formatting.

Inspect running processes and resource usage.

Stream editor for substitutions and line edits.

Archive and extract file trees reliably.