grep question

72bronco · #1 (**permalink**) 06-21-2007

Hello all,

I'm trying to grep a file for a particular line and character position number and place the contents into a variable that I will examine later.

The file should have the data I want in the 20th line and the 18th position on that line thru the 26th position on that line.

I've used grep in scripting before, but only to verify the existance of a certain string in a certain file...never to find a changing string and read it into a variable.

I've spent the last few hours googling this, but I'm afraid I'm too new to make sense of the results.

Can anyone help?

Thanks so much.

Shell_Life · #2 (**permalink**) 06-21-2007

Code:

sed -n '20p' input_file | cut -c18-26

72bronco · #3 (**permalink**) 06-21-2007

Ahhh, sed. Shows how much of a newb I am. wrong tool for the job.

Thank you!

anbu23 · #4 (**permalink**) 06-22-2007

Code:

var=$(sed -n '20{s/^.\{17\}//;s/\(.\{9\}\).*/\1/p;q;}' file)

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Grep question.	saurabhsinha23	UNIX for Dummies Questions & Answers	3	12-11-2007 01:58 AM
Question about GREP	Adriel	UNIX for Dummies Questions & Answers	16	03-22-2007 08:03 AM
Another grep question	kingdbag	UNIX for Dummies Questions & Answers	6	10-27-2006 02:56 AM
grep & sed question	der Kopf	Shell Programming and Scripting	1	11-22-2004 04:49 AM
Grep question	eloquent99	UNIX for Dummies Questions & Answers	4	02-20-2003 10:49 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by