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add grop4 utility for isolating IPv4s

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Connor Olding 2022-09-01 18:16:58 -07:00
parent 84e8ae03ec
commit 2c3ea77cf7
1 changed files with 11 additions and 0 deletions
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#!/usr/bin/env sh
# YES_ZSH
# YES_BASH
# YES_DASH
# YES_ASH
grop4() { ### @- [`grop`](#grop) for IPv4s.
grep -oP -- '(?<=^|[^\d.])((0|1\d\d|2[0-4]\d|25[0-5]|[1-9]\d?)\.((?2))\.((?2))\.((?2)))(?=$|[^\d.])'
}
[ -n "${preload+-}" ] || grop4 "$@"