Remove first 15 line - UNIX for Dummies Questions & Answers

bobo · #1 01-27-2006

Friends,

I have a file with 1000 lines. How can I remove the first 15 lines and 20 lines from BOTTOM of the file UP.

Many thanks!

vino · #2 01-27-2006

Code:

sed -n -e '16,980p' file

bobo · #3 01-27-2006

Thank you Vino

What about 20 lines from bottom up. And the files' line-number are randomly come in. sometimes, 850, 900, 700 ....

mahendramahendr · #4 01-27-2006

wc -l filename | awk '{ printf "%d",$1-20'} | xargs -I {} head -{} filename

or

sed -n "1,$(($(wc -l file1 | awk '{print $1'})-20)) p" filename

try the second one in ksh

gauravgoel · #5 01-28-2006

try the following

ex file_name
:1,5d (specify the range of lines to delete)
:wq!

specify the range correctly to delete the lines.

cheers,
Gaurav

matrixmadhan · #6 01-28-2006

Code:

lines=$((`sed -n '$=' samplefile` - 20)); awk '{ if(NR > 15 && NR < '$lines') print}' samplefile

bobo · #7 01-30-2006

Thank you much!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
sed remove last 10 characters of a line start from 3rd line	minifish	Shell Programming and Scripting	7	03-26-2008 01:42 PM
SED help (remove line::parse again::add line)	Malumake	Shell Programming and Scripting	6	10-24-2007 02:02 PM
remove line 1 and save it....	happyv	Shell Programming and Scripting	10	12-19-2006 11:32 PM
Remove header(first line) and trailer(last line) in ANY given file	madhunk	Shell Programming and Scripting	2	03-13-2006 12:36 PM
To remove new line character	shihabvk	UNIX for Advanced & Expert Users	6	08-18-2005 12:02 AM

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode