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To get Port number alone from the list

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Top Forums Shell Programming and Scripting To get Port number alone from the list
# 1  
Old 03-30-2011
To get Port number alone from the list
Code:
~]#netstat -vatn | grep LISTEN

tcp        0      0 0.0.0.0:34895               0.0.0.0:*                   LISTEN      
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN      
tcp        0      0 192.168.122.1:53            0.0.0.0:*                   LISTEN      
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      
tcp        0      0 127.0.0.1:5432              0.0.0.0:*                   LISTEN      
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      
tcp        0      0 ::ffff:127.0.0.1:8005       :::*                        LISTEN      
tcp        0      0 :::48006                    :::*                        LISTEN      
tcp        0      0 :::8009                     :::*                        LISTEN      
tcp        0      0 :::139                      :::*                        LISTEN      
tcp        0      0 :::5900                     :::*                        LISTEN      
tcp        0      0 :::111                      :::*                        LISTEN      
tcp        0      0 :::8080                     :::*                        LISTEN      
tcp        0      0 :::22                       :::*                        LISTEN      
tcp        0      0 ::1:631                     :::*                        LISTEN      
tcp        0      0 ::1:5432                    :::*                        LISTEN      
tcp        0      0 :::53756                    :::*                        LISTEN      
tcp        0      0 :::445                      :::*                        LISTEN

]# netstat -vatn | grep LISTEN | awk '{print $4}'
0.0.0.0:34895
0.0.0.0:111
192.168.122.1:53
0.0.0.0:22
127.0.0.1:631
127.0.0.1:5432
127.0.0.1:25
::ffff:127.0.0.1:8005
:::48006
:::8009
:::139
:::5900
:::111
:::8080
:::22
::1:631
::1:5432
:::53756
:::445


~]# netstat -vatn | grep LISTEN | awk '{print $4}' | cut -d: -f2
0.0.0.0
0.0.0.0
192.168.122.1
0.0.0.0
127.0.0.1
127.0.0.1
127.0.0.1
not gives all... in the output.. (and also i am not getting all.)

I need to get : Ports alone.

Output should be
=============
34895
11
53
22
631
5432
..
..
..

is there any other idea..


.
Last edited by linuxadmin; 03-30-2011 at 01:19 PM.. Reason: to change output..
# 2  
Old 03-30-2011
Try:
Code:
netstat -vatn | grep LISTEN | perl -alne '$F[3]=~/\d+$/;print $&'

Last edited by bartus11; 03-30-2011 at 03:27 PM.. Reason: forgot the "LISTEN" part
This User Gave Thanks to bartus11 For This Post:
linuxadmin
# 3  
Old 03-30-2011
Code:
netstat -vatn | grep LISTEN | awk '{print $4}'  | awk -F: '{print $NF}'

The last awk will print the last field, with a : as delimiter.
# 4  
Old 03-30-2011
Code:
netstat -vatn  | awk '$NF=="LISTEN"{n=split($4,t,":");print t[n]}'

# 5  
Old 03-30-2011
Code:
$ ruby -ane 'puts $F[3].split(":")[-1] if $F[-1]["LISTEN"]' file
34895
111
53
22
631
5432
25
8005
48006
8009
139
5900
111
8080
22
631
5432
53756
445

# 6  
Old 03-30-2011
Code:
sed '/LISTEN/!d; s/[^:]*://; s/[[:blank:]].*//; s/.*://'

Regards,
Alister
Last edited by alister; 03-31-2011 at 12:30 AM.. Reason: Modified solution
# 7  
Old 03-31-2011
Another idea through sed..
Code:
netstat -vatn | sed -n '/LISTEN/s/.*:\([0-9]\+\) .*/\1/p'
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