#tail for moonx

Print the last lines or bytes of files or stdin:

printf '1\n2\n3\n4\n' | moonx cli/tail -n 2
printf '1\n2\n3\n4\n' | moonx cli/tail -n +3   # from line 3 to the end
moonx cli/tail -n 100 huge.log

Options: -n N last N lines (default 10), -n +K from line K, -c N last N bytes, -c +K from byte K, -q/-v header control.

Regular files are read GNU-style from the end in fixed-size chunks, so memory stays constant for any file size — a multi-gigabyte log tails instantly, on the wasm target included. Stdin and pipes are streamed with a ring buffer that holds only the selected suffix. There is no -f (follow) mode.

With no file operand, an interactive terminal receives an EOF waiting prompt; piped, redirected, and explicit - input remain silent.

Source Files

main.mbt

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