Commands

Commands

Run help in the shell for the live catalogue. Sources are marked (source).

• Generate: echo, emit, seq, yes (sources)
• Filesystem: ls, find (sources), basename, dirname
• Search & filter: grep, comm, uniq
• Transform: tr, sed, perl, rev, cut, paste, split, join, nl, cat, tac, tail, head
• Summarize: wc, sort, shuf, diff, hexdump, base64, json
• External: exec, git

Flags

Flags are the responsibility of each cmd-* package; the REPL translates the Unix-style flags you type into the typed options those packages expose. For example wc -l → wc.WcLines, head -n 10 / head -10 → head.HeadLines(10), grep -v → grep.GrepInvert. See each command’s own repository for the full flag semantics.

Not wired

Some constructors require non-textual Go values and therefore cannot be built from a typed command line:

• awk — takes a Program interface (Begin/Condition/Action/End); there is no string→Program parser.
• while — takes a func([]byte) ([]byte, error).
• capture — takes io.Writer sinks.

If cmd-awk later offers a parser that builds a Program from a script string, awk can be wired like the others.