Israel Garcia <igalva...@gmail.com> writes:
>[...] it seems when the script found
>duplicate lines, like named/tcp and named/udp it only show one, se
>below:
>vps204:/usr/local/bin# netstat -lntup
>tcp 0 0 67.212.94.125:53 0.0.0.0:* >LISTEN 23874/named
>tcp 0 0 127.0.0.1:53 0.0.0.0:* >LISTEN 23874/named
>tcp6 0 0 :::53 :::* >LISTEN 23874/named
>udp 0 0 67.212.94.125:53 0.0.0.0:* > 23874/named
>udp 0 0 127.0.0.1:53 0.0.0.0:* > 23874/named
>udp6 0 0 :::53 :::* > 23874/named
>And the script output:
>vps204:/usr/local/bin# check2.sh
>/usr/sbin/named on port 53/tcp from package bind9 (version 1:9.5.1.dfsg.P3-1)
>As you can see the output only show named 53/tcp.
Good catch. Change the sort in the ports_and_pids function to
sort -u -t/ -k1n -k2
It should look like this now:
ports_and_pids()
{
netstat -lntup \
| awk '/^tcp/ { print $4"/"$1, $7 } /^udp/ { print $4"/"$1, $6 }' \
| sed -n 's|^[^ ]*:\([^ ]*\) \([0-9]*\)/.*|\1 \2|p' \
| sort -u -t/ -k1n -k2
}
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