Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - General
User Name
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.


  Search this Thread
Old 11-06-2003, 08:27 AM   #1
Registered: Nov 2003
Distribution: redhat
Posts: 57

Rep: Reputation: 15
Question how to grep only one string pr match


How can get all different strings in a file from a file with many equal strings?

example: <command> <option> <search-string> fromfile.txt > newfile.txt

Old 11-06-2003, 08:35 AM   #2
Registered: Jan 2002
Location: Cheyenne Wyoming
Distribution: Debian/Raspbian/Mint
Posts: 717

Rep: Reputation: 32
cat <file> | grep 'word1 word2 word3' > file.txt

Put the words in single quotes ' '

That should work.
Old 11-06-2003, 08:44 AM   #3
Registered: Nov 2003
Distribution: redhat
Posts: 57

Original Poster
Rep: Reputation: 15
I wan`t the them only printed once. So I get just different matches in the file. none equal. So I can se how many different strings there are, cause there are many equal
Old 11-06-2003, 10:40 AM   #4
jim mcnamara
Registered: May 2002
Posts: 964

Rep: Reputation: 34
Using the example you already were given:

cat <file> | grep 'word1 word2 word3' > file.txt
sort -um file.txt -o file1.txt

file1.txt now has duplicates removed.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
use grep and execute a command if string is found plisken Linux - General 6 07-28-2005 12:06 PM
Regular expression to match a valid URL string vharishankar Programming 13 07-21-2005 10:17 PM
grep [A-Z] & [a-z] match both upper and lower case. jschiwal Linux - General 4 05-28-2005 07:43 AM
iptables string match kahpeetan Linux - Security 3 11-09-2003 07:36 PM
grep - finding string and replacing with new ckibler Linux - Newbie 6 08-01-2003 07:25 PM

All times are GMT -5. The time now is 06:15 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration