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42 lines
1.8 KiB
Fish
42 lines
1.8 KiB
Fish
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function __fish_print_hostnames -d "Print a list of known hostnames"
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# HACK: This only deals with ipv4
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# Print all hosts from /etc/hosts
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# use 'getent hosts' on OSes that support it (OpenBSD and Cygwin do not)
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if type -q getent; and getent hosts > /dev/null 2>&1 # test if 'getent hosts' works and redirect output so errors don't print
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# Ignore zero ips
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getent hosts | string match -r -v '^0.0.0.0' \
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| string replace -r '[0-9.]*\s*' '' | string split " "
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else if test -r /etc/hosts
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# Ignore commented lines and functionally empty lines
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string match -r -v '^\s*0.0.0.0|^\s*#|^\s*$' < /etc/hosts \
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# Strip comments
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| string replace -ra '#.*$' '' \
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| string replace -r '[0-9.]*\s*' '' | string trim | string replace -ra '\s+' '\n'
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end
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# Print nfs servers from /etc/fstab
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if test -r /etc/fstab
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string match -r '^\s*[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3]:|^[a-zA-Z\.]*:' </etc/fstab | string replace -r ':.*' ''
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end
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# Check hosts known to ssh
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set -l known_hosts ~/.ssh/known_hosts{,2} /etc/ssh/known_hosts{,2} # Yes, seriously - the default specifies both with and without "2"
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for file in /etc/ssh/ssh_config ~/.ssh/config
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if test -r $file
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# Print hosts from system wide ssh configuration file
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# Note the non-capturing group to avoid printing "name"
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string match -ri '\s*Host(?:name)?(?:\s+|\s*=\s*)\w.*' < $file | string replace -ri '^\s*Host(?:name)?\s*(\S+)' '$1' \
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| string replace -r '\s+' ' ' | string split ' '
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set known_hosts $known_hosts (string match -ri '^\s*UserKnownHostsFile|^\s*GlobalKnownHostsFile' < $file \
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| string replace -ri '.*KnownHostsFile\s*' '')
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end
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end
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for file in $known_hosts
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# Ignore hosts that are hashed, commented or have custom ports (like [localhost]:2200)
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test -r $file; and string replace -ra '(\S+) .*' '$1' < $file | string match -r '^[^#|[=]+$' | string split ","
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end
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return 0
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end
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