Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Pattern match using grep between two files

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Pattern match using grep between two files
# 1  
Old 01-12-2014
Pattern match using grep between two files
Hello Everyone ,

I have two files. I want to pick line from file-1 and match with the complete data in file-2 , if there is a match print all the match lines in file 3. Below is the file

Code:
 cat test1.txt
vikas
vikasjain
j ain
testt
douknow
hello@vik@
#  33
||@@ vcpzxcmvhvdsh
dsfdvfdbsvfds judfdsjgfds

Code:
cat test2.txt
vik
ain
j ain123
estt
douknow
hello@vik@
vikasjainvikasjain

This is my shell script

Code:
cat compare3.sh

#!/bin/ksh
file="test1.txt"
while read line
do


egrep '$line' ./test2.txt >> match_vikas_new.txt
         
done <"$file"


I have trying to get this working but no luck. Apprcieate if you could guide me on this!
Last edited by Scrutinizer; 01-12-2014 at 04:45 AM.. Reason: Making the question more better; mod: code tags
# 2  
Old 01-12-2014
It seems to me you have the order of the files reversed and the variable $line cannot be expanded between to single quotes, you need double quotes.

Another way may be:
Code:
grep -Ff test2.txt test1.txt

The -F option forces fixed strings instead of regular expressions.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep everything between two pattern if match not found

I need to help to work this Print everything between 2 patterns if grep is not found the search word example Detroit orange cat bat rat apple sed -n "/Detroit,/apple/p" d |grep chicago output would be Detroit orange cat bat rat (1 Reply)
Discussion started by: jhonnyrip
1 Replies

2. Shell Programming and Scripting

unable to match grep pattern

Hi All, I am trying to select all files in a directory which are not with .gz extension . for which I am using below script , but its rejecting both .gz and .z extension files,as in each letter is considered separately. PFB ls -lrt | awk '{print $9}'| egrep "^IRAMS.*$" please suggest... (1 Reply)
Discussion started by: Jcpratap
1 Replies

3. Shell Programming and Scripting

awk or grep to match # of words before and after pattern

Pipe binary file matches grep results to file I am using grep to match a pattern, but the output is strange. $ grep -r -o "pattern" * Gives me: Binary file foo1 matches Binary file foo2 matches Binary file foo3 matches To find the lines before/after, I then have to use the... (1 Reply)
Discussion started by: chipperuga
1 Replies

4. Shell Programming and Scripting

grep - match files containing minimum number of pattern matches

I want to search a bunch of files and list only those containing a minimum number of pattern matches. So if I want to identify files containing 3 (or more) instances of the pattern "said:" and I have file1 that contains the lines: He said: She said: and file2 that contains the lines: He... (3 Replies)
Discussion started by: stumpyuk
3 Replies

5. Shell Programming and Scripting

shell script: grep multiple lines after pattern match

I have sql file containing lot of queries on different database table. I have to filter specific table queries. Let say i need all queries of test1,test2,test3 along with four lines above it and sql queries can be multi lines or in single line. Input file contains. set INSERT_ID=1; set... (1 Reply)
Discussion started by: mirfan
1 Replies

6. Solaris

Using grep to print just the pattern match

Hi all, Is it possible for grep to output just the pattern match and not the whole line when it comes across a match? I know you can adjust the number of trailing or leading lines that are printed, but am yet to find anything that outputs just the pattern match. Cheers, Tim (5 Replies)
Discussion started by: muzzaw
5 Replies

7. UNIX for Dummies Questions & Answers

Lynx Grep Pattern Match 2 conditions Print from Start to End

I am working on a scraping project and I am stuck at this tiny grep pattern match. Sample text : FPA List. FPA List. FPA List. FPA List. FPA List. FPA List. FPA List. FPA List. ABC Personal Planning Catherine K. Wat Cath Wat Catherine K. Wat Catherine K. Wat IFRAME:... (8 Replies)
Discussion started by: kkiran
8 Replies

8. Shell Programming and Scripting

Grep to match unknown pattern

Hi there I would like to search a file for a certain pattern, but i don't know the exact pattern i need to search for. What i do know is that i need to search for the pattern that exists the most in a certain file. so if a file looksike this: summer, summer, winter, spring, summer... (4 Replies)
Discussion started by: mrchilly
4 Replies

9. Shell Programming and Scripting

Pattern match in grep

Hi, I try to grep lines with pattern like float_or_int float_or_int float_or_int where float_or_int is any float or any integer of any length. I tried some : grep "* * *" FILENAME #Work for integers but not for floats grep '\<.*\> \<.*\> \<.*\>' FILENAME #Work for float but not... (4 Replies)
Discussion started by: tipi
4 Replies

10. UNIX for Dummies Questions & Answers

how to use pattern match with grep

hi, i'm having problem like this. i wish to grep some keyword from certain files in one directory. let's say i have a lot of files in my directory with the name of file.1 file.2 file.3 ...... file.500 i only wish to grep the keyword from file.20, file.21, file.23 .... file.50 i tried... (5 Replies)
Discussion started by: rei
5 Replies
Login or Register to Ask a Question