15 lines
301 B
Text
15 lines
301 B
Text
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# Thanks to Chris F. A. Johnson <c.f.a.johnson@rogers.com> for this one
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is_validip()
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{
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case "$*" in
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""|*[!0-9.]*|*[!0-9]) return 1 ;;
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esac
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local IFS=.
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set -- $*
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[ $# -eq 4 ] &&
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[ ${1:-666} -le 255 ] && [ ${2:-666} -le 255 ] &&
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[ ${3:-666} -le 255 ] && [ ${4:-666} -le 254 ]
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}
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