Diff between grep .* file name and grep '.*' filename | Unix Linux Forums | Shell Programming and Scripting

  Go Back    


Shell Programming and Scripting Post questions about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and OTHER shell scripts and shell scripting languages here.

Diff between grep .* file name and grep '.*' filename

Shell Programming and Scripting


Closed Thread    
 
Thread Tools Search this Thread Display Modes
    #1  
Old 11-19-2012
SasDutta SasDutta is offline
Registered User
 
Join Date: Jun 2007
Last Activity: 20 November 2012, 12:42 PM EST
Location: Kolkata
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Diff between grep .* file name and grep '.*' filename

Hi,

Can anyone let me know what is difference between

Code:
grep .* foo.c 

grep '.*' foo.c

I am not able to understand what is exact difference.

Thanks in advance

Last edited by jim mcnamara; 11-19-2012 at 06:11 PM..
Sponsored Links
    #2  
Old 11-19-2012
Chubler_XL's Avatar
Chubler_XL Chubler_XL is offline Forum Advisor  
Registered User
 
Join Date: Oct 2010
Last Activity: 20 October 2014, 9:21 PM EDT
Posts: 2,928
Thanks: 110
Thanked 929 Times in 869 Posts
Looks like a homework question
Sponsored Links
    #3  
Old 11-19-2012
jim mcnamara jim mcnamara is offline Forum Staff  
...@...
 
Join Date: Feb 2004
Last Activity: 20 October 2014, 6:07 PM EDT
Location: NM
Posts: 10,240
Thanks: 281
Thanked 802 Times in 746 Posts
The '*' is not expanded by the shell into filenames. *,? and other characters in the shell are metacharacters, they represent something "beyond" themselves as basic characters - in this case * is a wild card for filenames.

If this is homework post any followups in the homework forum. It has different rules.
Sponsored Links
Closed Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
[awk] grep a part of filename as entry file makan Shell Programming and Scripting 10 09-04-2012 06:04 AM
grep exact string from files and write to filename when string present in file JC_1 Shell Programming and Scripting 4 08-06-2012 10:52 PM
serach diff filename in diff location using shell scripting Lucky123 Shell Programming and Scripting 1 11-25-2011 02:44 AM
[solved] Diff between two files by grep feelmyfrd Shell Programming and Scripting 12 08-03-2010 02:46 AM
grep for certain files using a file as input to grep and then move anita07 Shell Programming and Scripting 2 12-10-2009 03:59 AM



All times are GMT -4. The time now is 11:46 PM.