netstat -a | grep

[SM_3]

Hello

I want to netstat -a | grep '23' (or any port number).

I dont want output to contain
6523 or
6723

I want output to contain
23 or
25 etc

Thanks.

[Steven E. Protter]

Shalom,

try:

netstat -a | grep " 23"

or

netstat -a | grep ":23"

putting a space in the quotes gets rid of 6523

SEP

[Arunvijai_4]

Hi,

You can restrict by

# netstat -a |grep "23"

-Arun

[Kofi ARTHIABAH]

How about:

netstat -an | grep '.23 '

note the -an says do not perform a name lookup (otherwise, 23 will be translated to telnet and will never show up) and note that there is a period before the 23 and a space after the 23.

you might also want to consider using lsof (download it if you dont already have it)

lsof -i :23

Hope this helps.

Kofi

[Jonathan Fife]

Hi,

If you do a grep -w 23 it will search for 23 as a word by itself.

netstat -a | grep -w 23

HTH

[Marcel Boogert_1]

Hi,

Use: netstat -a | grep ".23"

Regards,
MB.

[James R. Ferguson]

Hi:

# netstat -a|perl -nae 'print if $F[3]=~/\.23/'

Regards!

...JRF...

[A. Clay Stephenson]

You probably really want netstat -an so that all ports are listed numerically rather than symbolically and because the output is IP_address.portnumber we can take advantage of that "." and use grep -E (enhanced grep).

netstat -an | grep -E -e '\.23 '

Note the '\.' rather than '.'. In Regular Expressions, '.' represents any character so we need to explicitly look for the '.' and thus we need to escape the '.' with a backslash.

[spex]

Hi,

# netstat -an | grep -E '.+\..+\..+\..+\.23 |\*.23 '

PCS

[Jonathan Fife]

Just a note -- grep ".23" won't work since grep will interepret . as "any char" per regexp syntax.

If you escape the . (ie. grep "\.23" that will make grep search for a period, but will still include ports that start with 23 (ie. 2301, 239, etc.)

[SM_3]

Blimey, that was quick.


Thanks.

[SM_3]

apologies for the delayed points.