Unix/Linux Go Back    

Shell Programming and Scripting Unix shell scripting - KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and shell scripts and shell scripting languages here.

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

Shell Programming and Scripting

Closed Linux or Unix Question    
Thread Tools Search this Thread Display Modes
Old Unix and Linux 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


Can anyone let me know what is difference between

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 07:11 PM..
Sponsored Links
Old Unix and Linux 11-19-2012
Chubler_XL's Unix or Linux Image
Chubler_XL Chubler_XL is offline Forum Staff  
Join Date: Oct 2010
Last Activity: 10 February 2016, 9:44 PM EST
Posts: 3,229
Thanks: 126
Thanked 1,078 Times in 1,009 Posts
Looks like a homework question
Sponsored Links
Old Unix and Linux 11-19-2012
jim mcnamara jim mcnamara is offline Forum Staff  
Join Date: Feb 2004
Last Activity: 13 February 2016, 9:49 PM EST
Location: NM
Posts: 10,669
Thanks: 396
Thanked 919 Times in 853 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 Linux or Unix Question

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Linux 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 07:04 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 11:52 PM
serach diff filename in diff location using shell scripting Lucky123 Shell Programming and Scripting 1 11-25-2011 03:44 AM
[solved] Diff between two files by grep feelmyfrd Shell Programming and Scripting 12 08-03-2010 03:46 AM
grep for certain files using a file as input to grep and then move anita07 Shell Programming and Scripting 2 12-10-2009 04:59 AM

All times are GMT -4. The time now is 10:41 AM.