hello-cat.sh:#!/bin/sh
# https://ctarbide.github.io/pages/2024/2024-02-05_12h00m11_hello-worlds/
# https://github.com/ctarbide/coolscripts/blob/master/bin/nofake-exec.nw
set -eu; set -- "${0}" --ba-- "$@" --ea--
exec nofake-exec.sh --error -Rnot-a-prog "$@" -- cat
exit 1
This is a live literate program.
<<tested with versions>>=
- cat (GNU coreutils) 9.3
@
<<try this>>=
seq 3 | ./hello-cat.sh -
@
<<not-a-prog>>=
hello world!