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Check for IP validity

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庸人自扰
庸人自扰 2020-12-05 07:13

How do I check the validity of an IP address in a shell script, that is within the range 0.0.0.0 to 255.255.255.255?

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  • 谎友^
    谎友^ (楼主)
    2020-12-05 07:30

    Use ipcalc

    $ ipcalc -cs 10.10.10.257 && echo vail_ip || echo invalid_ip
invalid_ip

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