Shulou(Shulou.com)06/01 Report--

I casually wrote a script to obtain the public network IP, which mainly distinguishes the difference between "" and ``.

#! / bin/baship_add= `curl-s-4 icanhazip.com `echo "public IP:$ip_add"

The above assignment "" in / bin/bash takes a string, while ``is the string after the instruction is run. Of course, it can also be applied to some scripts such as iptables,DNS on this basis.

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