UNIX for Dummies Questions & Answers

Hi,
I need some help with the cut command, can i use it to cut a certain number of characters from string starting from the end.
say my string is like this
some junk data xyz1@pqr.com xyz2@pqr.com some more junk data
I can't exactly say how many email addresses are present in between. But the length of the junk data on both sides is always fixed.
So i got rid of the first junk string as
$echo "some junk data xyz1@yahoo.com xyz2@yahoo.com some more junk data" | cut -d " " -f 4-
output is
xyz1@pqr.com xyz2@pqr.com some more junk data
I want to get rid of "some more junk data" which has the same length but not necessarily the same content.

Pooja

Code:

 
$nawk '{ for(i=1;i<=NF;i++) { if(index($i,".com")>0){print $i} }}' test
xyz1@pqr.com
xyz2@pqr.com

$cat test
some junk data xyz1@pqr.com xyz2@pqr.com some more junk data

Pooja,

Can you please describe briefly.

Many Thanks,
Subhendu

Hi,

Solution itkamaraj gave worked for me. Thank you.

---------- Post updated 07-08-11 at 12:14 AM ---------- Previous update was 07-07-11 at 05:09 AM ----------

I have another question. Say the data in between is not of a fixed length or content unlike previously where there was a matching pattern ".com" .
The length of data on either sides is the same , although the content can still vary, how do i just get the part in between:

eg ; Data is something like this :

some junk data HELLO ! some more junk data
some junk data HOW ARE YOU some more junk data

The length of some junk data and some more junk data is constant but the content in between keeps changing. How do i go about this?

Try this:

Code:

~/unix.com$ echo 'some junk data xyz1@yahoo.com xyz2@yahoo.com some more junk data
some junk data HELLO ! some more junk data
some junk data HOW ARE YOU some more junk data' | awk '{print substr($0,16,length($0)-35)}'

As junk data has always the same length, you'll have to calculate the values 16 and 35