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#!/bin/sh
#
# shoal(1) -- Print all the non-wildcard Host names (first
# one per line) from an ssh_config(5) file, defaulting to
# $HOME/.ssh/config.
#
# Author: Tom Ryder <tom@sanctum.geek.nz>
# Copyright: 2014
# License: Public domain
#
prog='$1 == "Host" && $2 !~ /[^a-z0-9_-]/ {print $2}'
awk "$prog" "${1:-$HOME/.ssh/config}"
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