Can i use Variables in sed command in line numbers

bezudar · #1 (**permalink**) 11-20-2008

I wish to give line number from one point to another in sed command like this
sed -n 1,1000000p file1.txt >file2.txt
but variable line number $x,$x+100000 can i give it cos i tried and it was giving an error any suggestions?/
Thx in advance
AC

elbrand · #2 (**permalink**) 11-20-2008

why not calculate the line numbers outside of the sed-script?

#! /bin/bash
typeset -i A=1 B=A+5
sed -n "${A},${B} p" file.txt

danmero · #3 (**permalink**) 11-20-2008

Print from x line to x+3 line.

Code:

sed -n $x,$((x+3))'p'  file

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
assign a command line argument and a unix command to awk variables	sweta_doshi	Shell Programming and Scripting	0	08-08-2008 07:54 AM
Extract numbers from a string and store in variables	davewg	Shell Programming and Scripting	6	11-14-2007 05:22 AM
Need help capturing end of line numbers	icalderus	SUN Solaris	3	09-21-2007 03:34 AM
How do you take in variables/parameters from the command line?	avisram	UNIX for Dummies Questions & Answers	1	07-21-2005 10:47 AM
add line numbers	esham	Shell Programming and Scripting	4	03-07-2005 10:46 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