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Top Forums Shell Programming and Scripting Failure using regex with awk in 'while read file' loop Post 302940532 by pathunkathunk on Tuesday 7th of April 2015 01:08:07 AM
Old 04-07-2015
This successfully extracts lines with the correct label. But I am looking for only two lines for each label in labels.txt, and the lines should be randomly chosen. Can this script be piped to " gshuf -n 2"--or the equivalent--before the file is created?

What does $3 do in this code?
 

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IP-ADDRLABEL(8) 						       Linux							   IP-ADDRLABEL(8)

NAME
ip-addrlabel - protocol address label management SYNOPSIS
ip [ OPTIONS ] addrlabel { COMMAND | help } OPTIONS := { -V[ersion] | -s[tatistics] | -r[esolve] | -f[amily] { inet | inet6 | ipx | dnet | link } | -o[neline] } ip addrlabel { add | del } prefix PREFIX [ dev DEV ] [ label NUMBER ] ip addrlabel { list | flush } DESCRIPTION
IPv6 address labels are used for address selection; they are described in RFC 3484. Precedence is managed by userspace, and only the label itself is stored in the kernel. ip addrlabel add - add an address label add an address label entry to the kernel. prefix PREFIX dev DEV the outgoing interface. label NUMBER the label for the prefix. 0xffffffff is reserved. ip addrlabel del - delete an address label delete an address label entry from the kernel. Arguments: coincide with the arguments of ip addrlabel add but the label is not required. ip addrlabel list - list address labels list the current address label entries in the kernel. ip addrlabel flush - flush address labels flush all address labels in the kernel. This does not restore any default settings. SEE ALSO
ip(8) AUTHOR
Manpage by Yoshifuji Hideaki / iproute2 20 Dec 2011 IP-ADDRLABEL(8)
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