Sponsored Content
Top Forums Shell Programming and Scripting grep a specific line from a file Post 302374429 by Neo on Tuesday 24th of November 2009 11:58:51 AM
Old 11-24-2009
Have you tried the -m flag?


Quote:
-m NUM, --max-count=NUM
Stop reading a file after NUM matching lines. If the input is standard input from a regular file, and NUM matching lines
are output, grep ensures that the standard input is positioned to just after the last matching line before exiting,
regardless of the presence of trailing context lines. This enables a calling process to resume a search. When grep
stops after NUM matching lines, it outputs any trailing context lines. When the -c or --count option is also used, grep
does not output a count greater than NUM. When the -v or --invert-match option is also used, grep stops after outputting
NUM non-matching lines.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grep a word from a specific line

for example: searches only for single word for single word this is line three match=$(grep -n -e "single" data.txt) this command will stored "..... single ...... single" into search. how can i grep the single word just from line 2 only?? (3 Replies)
Discussion started by: blurboy
3 Replies

2. Shell Programming and Scripting

grep on specific line of the file

Hi, how can we search for a word (with case ignore )on specific line numbers ex: Awk /^regEX/ with condition on first line or second line Awk/^ regex1/ on line 1 Awk /^regEX2/ on line 3 thanks in advance (4 Replies)
Discussion started by: rider29
4 Replies

3. Shell Programming and Scripting

grep specific line

if i have a file that contains common directory -bash-3.2$ cat test /opt /opt/mdm /opt/test -bash-3.2$ how can i grep "/opt" so that the result should only show "/opt" (6 Replies)
Discussion started by: ryandegreat25
6 Replies

4. UNIX Desktop Questions & Answers

grep lines with two specific characters somewhere in the line

I'm having trouble with extracting certain lines from a file based on whether they have all the required fields. Original file: snt:594:Sam N This bpt:2342:Bob P That lr:123 wrp:23:Whoever Person cor:794 Desired output: snt:594:Sam N This bpt:2342:Bob P That wrp:23:Whoever Person ... (3 Replies)
Discussion started by: Chthonic
3 Replies

5. UNIX for Dummies Questions & Answers

Grep specific records from a file of records that are separated by an empty line

Hi everyone. I am a newbie to Linux stuff. I have this kind of problem which couldn't solve alone. I have a text file with records separated by empty lines like this: ID: 20 Name: X Age: 19 ID: 21 Name: Z ID: 22 Email: xxx@yahoo.com Name: Y Age: 19 I want to grep records that... (4 Replies)
Discussion started by: Atrisa
4 Replies

6. Shell Programming and Scripting

fetch last line no form file which is match with specific pattern by grep command

Hi i have a file which have a pattern like this Nov 10 session closed Nov 10 Nov 9 08:14:27 EST5EDT 2010 on tty . Nov 10 Oct 19 02:14:21 EST5EDT 2010 on pts/tk . Nov 10 afrtetryytr Nov 10 session closed Nov 10 Nov 10 03:21:04 EST5EDT 2010 Dec 8 Nov 10 05:03:02 EST5EDT 2010 ... (13 Replies)
Discussion started by: Himanshu_soni
13 Replies

7. Shell Programming and Scripting

How to grep an empty line in a specific column of a file?

Suppose i have the following data : cat file.txt 12431,123334,55353,546646,14342234,4646,35234 123123,3535,123434,132535,1234134,13535,123534 123213,545465,23434,45646,2342345,4656,31243 2355425,2134324,53425,342,35235,23434,234535 3423424,234234,65465,,2344,35436,234524,234... (7 Replies)
Discussion started by: Ravi Tej
7 Replies

8. Shell Programming and Scripting

Extract specific line in an html file starting and ending with specific pattern to a text file

Hi This is my first post and I'm just a beginner. So please be nice to me. I have a couple of html files where a pattern beginning with "http://www.site.com" and ending with "/resource.dat" is present on every 241st line. How do I extract this to a new text file? I have tried sed -n 241,241p... (13 Replies)
Discussion started by: dejavo
13 Replies

9. Shell Programming and Scripting

Grep pattern after specific line number in a file

Hi guys, I am running a while loop in a script ro read a file line by line. Now I want to run a grep only on the lines below the line I am that is being read by the while loop. Eg: If my while loop is on line 4 of the file, the grep only runs below line 4 and does not include line 1,2... (3 Replies)
Discussion started by: Junaid Subhani
3 Replies

10. Shell Programming and Scripting

Grep string in a file and paste next line in a specific way

Hello, I know there are many questions and replies regarding grep command. What I would like to do is a bit different. File A: hello world welcome to my page this is my test site how are you I am fine, thank you where have you been I was in hospital really hope you are fine now Thanks,... (10 Replies)
Discussion started by: baris35
10 Replies
SDIFF(1)							   User Commands							  SDIFF(1)

NAME
sdiff - side-by-side merge of file differences SYNOPSIS
sdiff [OPTION]... FILE1 FILE2 DESCRIPTION
Side-by-side merge of file differences. -o FILE --output=FILE Operate interactively, sending output to FILE. -i --ignore-case Consider upper- and lower-case to be the same. -E --ignore-tab-expansion Ignore changes due to tab expansion. -b --ignore-space-change Ignore changes in the amount of white space. -W --ignore-all-space Ignore all white space. -B --ignore-blank-lines Ignore changes whose lines are all blank. -I RE --ignore-matching-lines=RE Ignore changes whose lines all match RE. --strip-trailing-cr Strip trailing carriage return on input. -a --text Treat all files as text. -w NUM --width=NUM Output at most NUM (default 130) print columns. -l --left-column Output only the left column of common lines. -s --suppress-common-lines Do not output common lines. -t --expand-tabs Expand tabs to spaces in output. --tabsize=NUM Tab stops are every NUM (default 8) print columns. -d --minimal Try hard to find a smaller set of changes. -H --speed-large-files Assume large files and many scattered small changes. --diff-program=PROGRAM Use PROGRAM to compare files. -v --version Output version info. --help Output this help. If a FILE is `-', read standard input. Exit status is 0 if inputs are the same, 1 if different, 2 if trouble. AUTHOR
Written by Thomas Lord. REPORTING BUGS
Report bugs to: bug-diffutils@gnu.org GNU diffutils home page: <http://www.gnu.org/software/diffutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for sdiff is maintained as a Texinfo manual. If the info and sdiff programs are properly installed at your site, the command info diff should give you access to the complete manual. diffutils 2.9.19-4065 April 2010 SDIFF(1)
All times are GMT -4. The time now is 10:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy