grep for a particular pattern and remove few lines above top and bottom of the patter Post: 302171761

Sponsored Content

Top Forums Shell Programming and Scripting grep for a particular pattern and remove few lines above top and bottom of the patter Post 302171761 by fed.linuxgossip on Friday 29th of February 2008 11:45:46 AM

02-29-2008

Registered User

grep for particular pattern and remove few lines above top and bottom of the pattern

grep for a particular pattern and remove 5 lines above the pattern and 6 lines below the pattern

root@server1 [~]# cat filename

Shell Programming and Scripting test1
Shell Programminsada asda
dasd asd Shell Programming and Scripting Post New Thread
Shell Programming and S sadsa sadcripting Post New Thread
Shell Progsdaas dsadsaramming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
pattern_to_remove
Shell Programming and Scripting Post New Thread
Shell Programming awetrtg teyy teyer nd Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and rewrwt r t Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programmingsadas ade and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programming and Scripting Post New Thread
Shell Programminsadsa asdad`g and Scripting Post New Thread

Prefix each line of output with the line number within its input file.
#######################################################################################

root@server1 [~]# grep -n "pattern_" 12345
12 Smilie

attern_to_remove
root@server1 [~]#

Now I want that 5 lines before line number 12 and 6 lines after line number 12 be replaced with null or removed(deleted) with a script

Please advise

Last edited by fed.linuxgossip; 02-29-2008 at 12:46 PM.. Reason: spell

fed.linuxgossip

View Public Profile for fed.linuxgossip

Find all posts by fed.linuxgossip

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to search for a pattern from bottom to top.

Hi, I have a file, which is having a pattern "SEARCH" somewhere towards end of the file, if i am giving " grep -i "SEARCH" $File" , it is taking too much time as file is very big. So i want to search for the pattern from the back side of the file, how can we search for a pattern in bottom...

2. UNIX for Dummies Questions & Answers

Grep for a pattern based on another patter

hi, I have looked at many grep threads and am unable to find something like this: please help. I have a file which is generated from a report generator and i am trying to load a whole lot of specific data into a table for the users. One field is causing me problems.All the rest i can manage....

3. Shell Programming and Scripting

Search for string and print top and bottom line

Hi Folks I need a one liner to parse through a log and if the string is found print the line above, the line with the string and the line below. example: The ball is green and blue Billy through the ball higer. Jane got hurt with the ball. So if I search for Billy I would need the 3...

4. Shell Programming and Scripting

Remove x lines form top and y lines form bottom using AWK?

How to remove x lines form top and y lines form bottom. This works, but like awk only cat file | head -n-y | awk 'NR>(x-1)' so remove last 3 lines and 5 firstcat file | head -n-3 | awk 'NR>4'

5. Shell Programming and Scripting

Print n lines from top and n lines from bottom of all files with .log extenstion

Oracle Linux 6.4 In a directory I have more than 300 files with the extension .log I want the first 5 and last 5 lines of these .log files to be printed on screen with each file's name. Expected output : Printing first 5 and last 5 lines of FX_WT_Feb8_2014.log !! Authentication...

6. Ubuntu

Title bar top and bottom

Hello forum, Seems that only I have alot of questions regarding Ubuntu :D In Ubuntu 12.04 LTS the gnome I have been using gdm and lightdm. In lightdm the top and side bars are aka "unity" and can be removed using apt-get remove unity I need to do the same for menu bars gdm. I do not...

7. Shell Programming and Scripting

How to print from bottom to top?

Hi, i have a file which contains PID and wanted to execute kill command. but the thing is, when killing PID's needs to kill PID from bottom to top. Please help INPUT 21414 sh -c extract.ksh ASA 21416 /bin/ksh extract.ksh ASA 21428 /usr/bin/perl -w /var/tmp/tempperl.21416 ASA...

8. Shell Programming and Scripting

Remove top and bottom for each column

Dear All I was wondering if someone could help me in resolving an issue. I have a file like this: column1 column2 2 4 3 5 8 9 0 12 0 0 0 0 9 0 87 0 1 0 1 0 1 0 4 0

9. Shell Programming and Scripting

Removing top few and bottom few rows in a file

Hi, I have a requirement where I need to delete given number of top and bottom rows in a flat file which has new line as its delimiter. For ex: if top_rows=2 & bottom_rows=1 Then in a given file which looks like: New York DC LA London Tokyo Prague Paris Bombay Sydney...

LEARN ABOUT V7

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)