Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Grep word search

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Grep word search
# 8  
Old 12-11-2010
Hi Scrutinzer,

Great!
Your code works as per my requirement. Thanks a lot for everyone!

Vasanth.
# 9  
Old 12-11-2010
@R0H0N
If you put special characters like ^ and $ inside square brackets then grep uses their literal meaning (and in the case of ^ it becomes a negation operator if used on the first position).
Last edited by Scrutinizer; 12-11-2010 at 03:47 AM..
# 10  
Old 12-11-2010
HI Scrutinizer,

Quote:
grep -E '(^|[[:space:]])SUB([[:space:]]|$)' file
I'm little new to unix. It would be great if you can explain the above in detail ?

Thanks,
Vasanth.
# 11  
Old 12-11-2010
Quote:
Originally Posted by Scrutinizer
If you put special characters like ^ and $ inside square brackets then grep uses their literal meaning (and in the case of ^ it becomes a negation operator if used on the first position).

Oh! Yes! I put that in a hurry. Didn't think what it is gonna represent. Thanks for pointing out my mistake.Smilie
R0H0N
# 12  
Old 12-11-2010
Quote:
Originally Posted by skcvasanth
HI Scrutinizer,



I'm little new to unix. It would be great if you can explain the above in detail ?

Thanks,
Vasanth.
-Emeans to use extended regular expression (the same as the deprecated egrep). This enables the use of alternation (the | operator).

(^|[[:space:]]) means either the beginning of the line (^) or any kind of space character.

([[:space:]]|$) means either any kind of space character or the end of the line ($).
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to search for a word in column header that fully matches the word not partially in awk?

I have a multicolumn text file with header in the first row like this The headers are stored in an array called . which contains I want to search for each elements of this array from that multicolumn text file. And I am using this awk approach for ii in ${hdr} do gawk -vcol="$ii" -F... (1 Reply)
Discussion started by: Atta
1 Replies

2. Shell Programming and Scripting

Search for a specific word and print only the word from the input file

Hi, I have a sample file as shown below, I am looking for sed or any command which prints the complete word only from the input file. Ex: $ cat "sample.log" I am searching for a word which is present in this file We can do a pattern search using grep but I need to cut only the word which... (1 Reply)
Discussion started by: mohan_kumarcs
1 Replies

3. Linux

How to search multiple word using grep command?

How to search multiple word using grep command for example i want to reserch ANJ001 AA Using ridiculous font, size, and color changes instead of normal space separated text and CODE tags obfuscates what you are trying to do and makes it difficult for volunteers who may want to help you solve... (1 Reply)
Discussion started by: na.dharma
1 Replies

4. Shell Programming and Scripting

[Solved] Search for a word and print the next word

Hi, I am trying to search for a word and print the next word. For example: My text is "<TRANSFORMATION TYPE ="Lookup Procedure">" I am searching for "TYPE" and trying to print ="Lookup Procedure" I have written a code like following: echo $line | nawk... (4 Replies)
Discussion started by: sampoorna
4 Replies

5. Shell Programming and Scripting

Search for the word and exporting 35 characters after that word using shell script

I have a file input.txt which have loads of weird characters, html tags and useful materials. I want to display 35 characters after the word "description" excluding weird characters like $&lmp and without html tags in the new file output.txt. Help me. Thanx in advance. I have attached the input... (4 Replies)
Discussion started by: sachit adhikari
4 Replies

6. Shell Programming and Scripting

Search for the word and exporting 35 characters after that word using shell script?

I have a file input.txt which have loads of weird characters, html tags and useful materials. I want to display 35 characters after the word description excluding weird characters like $$#$#@$#@***$# and without html tags in the new file output.txt. Help me. Thanx in advance. My final goal is to... (11 Replies)
Discussion started by: sachit adhikari
11 Replies

7. UNIX for Dummies Questions & Answers

Script to search for a particular word in files and print the word and path name

Hi, i am new to unix shell scripting and i need a script which would search for a particular word in all the files present in a directory. The output should have the word and file path name. For example: "word" "path name". Thanks for the reply in adv,:) (3 Replies)
Discussion started by: virtual_45
3 Replies

8. Shell Programming and Scripting

Search the word to be deleted and delete lines above this word starting from P1 to P3

Hi, I have to search a word in a text file and then I have to delete lines above from the word searched . For eg suppose the file is like this: Records P1 10,23423432 ,77:1 ,234:2 P2 10,9089004 ,77:1 ,234:2 ,87:123 ,9898:2 P3 456456 P1 :123,456456546 P2 abc:324234 (2 Replies)
Discussion started by: vsachan
2 Replies

9. Shell Programming and Scripting

Grep Search for both First and last word

Hi Pretty sure this is very simple hence im banging my head o the wall as to why i cant get this to work: Im greping against many files where there will be the following string: Date: Thu, Aug 23 2001 09:27 PM (of course values such as date ,time and PM/AM will vary.) Im trying to grep... (1 Reply)
Discussion started by: duonut
1 Replies

10. Shell Programming and Scripting

grep -w Search for the expression as a word

I have a file (file1) with around 5000 records and another file (file2) with 50000 records. I want to search each word in file 1 from file 2 and spew the output of the matches in file3. Can someone please help me here. I tried doing this in ksh for i in `cat file1` do grep -w $i... (15 Replies)
Discussion started by: knijjar
15 Replies
Login or Register to Ask a Question