Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: grep for a particular pattern and remove few lines above top and bottom of the patter
Top Forums Shell Programming and Scripting grep for a particular pattern and remove few lines above top and bottom of the patter Post 302171891 by fed.linuxgossip on Saturday 1st of March 2008 03:14:11 AM
Old 03-01-2008
Hello,


root@server [~]# grep -n "Host: " /home/path/public_html/* | awk {'print $1}' > /root/1234567890 && replace ":" " " -- /root/1234567890



root@server [~]# cat /root/1234567890

/home/path/public_html/file12.htm 515
/home/path/public_html/file19.htm 1662
/home/path/public_html/file26.htm 2245
/home/path/public_html/file5.htm 509
/home/path/public_html/file15.htm 2178
/home/path/public_html/file1.htm 1837
/home/path/public_html/file22.htm 1746
/home/path/public_html/file29.htm 507



I have now the line number in which the pattern is present, and its present only once is any file. The pattern in this case is "Host: "


can you advise a script that will do the following:

x=cat /root/1234567890 | awk {'print $1}'
y=cat /root/1234567890 | awk {'print $2}'

sed -i '$y-7,($y+9)d' $x


Thanks
 

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... (5 Replies)
Discussion started by: Prat007
5 Replies

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.... (7 Replies)
Discussion started by: rock1
7 Replies

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... (1 Reply)
Discussion started by: bombcan
1 Replies

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 Replies)
Discussion started by: Jotne
5 Replies

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... (7 Replies)
Discussion started by: kraljic
7 Replies

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... (0 Replies)
Discussion started by: br1an
0 Replies

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... (4 Replies)
Discussion started by: reignangel2003
4 Replies

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 (2 Replies)
Discussion started by: giuliangiuseppe
2 Replies

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... (7 Replies)
Discussion started by: calredd
7 Replies

LEARN ABOUT MOJAVE

createhomedir

createhomedir(1)					    BSD General Commands Manual 					  createhomedir(1)

NAME

     createhomedir -- create and populate home directories on the local computer.

SYNOPSIS

     createhomedir [-scbalh] [-n directoryDomainName] [-u username]

DESCRIPTION

     createhomedir provides several options for creating and populating home directories.

OPTIONS

     -s       creates home directories for server home paths only (default).

     -c       creates home directories for local home paths only.

     -b       creates home directories for both server and local home paths.

     -a       creates home directories for users defined in all directory domains of the server's search path.

     -l       creates home directories for users defined in the local directory domain.

     -L       causes the created home directory to be localized.

     -n directoryDomainName
	      creates home directories for users defined in a specific directory domain in the server's search path.

     -u username
	      creates a home directory for a specific user defined in the domain(s) identified in the -a, -l, or -n parameter. If you omit the -a,
	      -l, and -n parameters when you use the -u parameter, -a is assumed.

     -i       reads username list from standard input and creates specified home directories. Each username should be on its own line.

     -h       usage help.

FILES

     /usr/sbin/createhomedir			   location of tool

CAVEATS

     When using the -a option, search limits of various directory servers (such as Open Directory or Active Directory) can prevent all possible
     home directories from being created. In this case, you may need to specify the usernames explicitly.

Mac OS X							   May 31, 2019 							  Mac OS X
All times are GMT -4. The time now is 01:46 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy