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hym3242/DisableLineBufferInNetcat&Cat.md

Last active October 25, 2023 15:45
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netcat/cat in raw mode (not line buffered, every keypress is immediately sent over)
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DisableLineBufferInNetcat&Cat.md

Put this in your .bashrc/.profile:

rawcat() { sh -c 'trap "stty icanon" SIGINT; stty -icanon; cat $@;' _ $@; }
rawnc() { sh -c 'trap "stty icanon" SIGINT; stty -icanon; nc $@;' _ $@; }

The trap is used to set cat/nc to icanon state when it is Ctrl+C'd, otherwise it will be stuck in -icanon even if you run the normal /bin/cat, or any program that reads stdin like cat, like hexdump.

When using cat > file stty would complain, but still works as expected for some unknown reason

see man stty

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