grep ipv42022-01-06 06:22doc shell sh grep ipv4egrep "^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}$"/comments ~umgeher/changelog@lists.sr.ht?Subject=Re: grep ipv4/permalink https://umgeher.org/posts/2022/01/grep-ipv4.html
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