regex - How to split outputs of single column with awk? -


i want grep out port , ip address netstat -tulpn command. output :

active internet connections (only servers) proto recv-q send-q local address           foreign address         state        tcp        0      0 127.0.0.1:3010          0.0.0.0:*               listen               tcp        0      0 127.0.0.1:3306          0.0.0.0:*               listen            tcp        0      0 127.0.1.1:5334          0.0.0.0:*               listen           tcp        0      0 127.0.0.1:6113          0.0.0.0:*               listen            tcp6       0      0 ::1:601                 :::*                    listen             udp        0      0 0.0.0.0:5013            0.0.0.0:*                            udp        0      0 127.0.1.1:5333          0.0.0.0:*                                udp        0      0 0.0.0.0:6341            0.0.0.0:*                            udp        0      0 0.0.0.0:53553           0.0.0.0:*                                 udp        0      0 0.0.0.0:5123            0.0.0.0:*                            udp6       0      0 :::4905                 :::*                                 udp6       0      0 :::353                  :::*

with awk local address column.

sudo netstat -tulpn | awk '{ print $4;}'

now want split port , ip each other , show in 2 separate columns. what's simplest way it? (regex or somthing that)

you want split on last colon in field. gnu awk:

gawk '{match($4, /(.*):(.*)/, m); print m[1], m[2]}'

or

gawk '{print gensub(/(.*):/,"\\1 ", 1, $4)}'

with non-gnu awk:

mawk '{ip=$4; sub(/:[^:]+/,"",ip); port=$4; sub(/.*:/,"",port); print ip,port}'

with perl

perl -lape '$_ = join(" ", $f[3] =~ /(.*):(.*)/)'

pipe output | column -t make pretty.


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