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| author | An-Cheng Huang <ancheng@vyatta.com> | 2007-11-12 13:06:02 -0800 |
|---|---|---|
| committer | An-Cheng Huang <ancheng@vyatta.com> | 2007-11-12 13:06:02 -0800 |
| commit | b7fc9e0f6d6105ba2203f219743d4b269415e84b (patch) | |
| tree | ef6586dfc62798c2b17487b443864699aca55f31 /examples/functions/isvalidip | |
| download | vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.tar.gz vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.zip | |
initial import from bash_3.1dfsg.orig.tar.gz
Diffstat (limited to 'examples/functions/isvalidip')
| -rw-r--r-- | examples/functions/isvalidip | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/examples/functions/isvalidip b/examples/functions/isvalidip new file mode 100644 index 0000000..0b2dafe --- /dev/null +++ b/examples/functions/isvalidip @@ -0,0 +1,14 @@ +# Thanks to Chris F. A. Johnson <c.f.a.johnson@rogers.com> for this one +is_validip() +{ + case "$*" in + ""|*[!0-9.]*|*[!0-9]) return 1 ;; + esac + + local IFS=. + set -- $* + + [ $# -eq 4 ] && + [ ${1:-666} -le 255 ] && [ ${2:-666} -le 255 ] && + [ ${3:-666} -le 255 ] && [ ${4:-666} -le 254 ] +} |