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Shell Programming and Scripting

Pattern Matching

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# 1  
Old 07-17-2006
Pattern Matching
How to print the words with matching pattern. GREP lists the lines matching given pattern. But I want those words that matches the pattern
# 2  
Old 07-17-2006
Please read the man page carefully. -o option is there

echo " this is grep test" | grep -o "test"
test

-o, --only-matching
Show only the part of a matching line that matches PATTERN.
# 3  
Old 07-17-2006
-o option in grep is not there. I am using MKS toolkit that executes Unix shell command in windows environment. Any other way?
# 4  
Old 07-17-2006
but -o option is not available in grep under solaris

-o option is not a standard option to grep
# 5  
Old 07-17-2006
I don't have access to solaris machine right now. If I can recall correctly there are 2 executables for grep in Solaris. Second one should be under /usr/xpg/bin or /usr/xpg4/bin/grep
If not then check to see if egrep is there in your system ( which egrep).
Last edited by vish_indian; 07-17-2006 at 08:44 AM..
# 6  
Old 07-17-2006
both grep and egrep utilities both searches for the pattern with their own reserved differences in usage

man egrep
Quote:
The egrep (expression grep) utility searches files for a
pattern of characters and prints all lines that contain that
pattern.
the other version of grep is available under /usr/xpg4/bin/grep

and the non-availability of option -o is for both and not just for the /usr/bin/grep
# 7  
Old 07-17-2006
You might have to use awk then.

awk '/pat/{print $x}' filename

where x is the field no. assuming pattern always occurs in the same field.
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