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Piping GREP

 
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# 8  
Old 01-30-2009
Quote:
Originally Posted by joeyg
Code:
> cat file158
BOB
TED
HENRY
SMITH

> RESULT=`tr -d "\n" <file158 | grep "BOB" | grep "SMITH" | tr "[:print:]" "Y" | tr -s "Y"`
> echo $RESULT
Y

> RESULT=`tr -d "\n" <file158 | grep "BOB" | grep "SMITY" | tr "[:print:]" "Y" | tr -s "Y"`
> echo $RESULT

I see what you are trying to do. But I do not think it will work since there is more than one word per line. I have to scan through logs to make sure that two words appear on the same line: sshd and illegal.
# 9  
Old 01-30-2009
Quote:
Originally Posted by joeyg
grep checks by line, not by file.

Is your example of Bob on one line and Smith on another what you are trying to accomplish? Merely to see if two things exist inside a file anywhere?
I have to make sure that two words exist on the same line...sshd illegal.....
maybe I am better off using a regular expression? How would I do that?
# 10  
Old 01-30-2009
Hammer & Screwdriver To see if both exist on the same line
Code:
> cat file158
BOB MCDONALD had a farm
TED did not own anything
HENRY SMITH was the important person
SMITHSONIAN is a great place to visit

> RESULT=`grep "BOB" <file158 | grep "SMITY" | tr "[:print:]" "Y" | tr -s "Y"`
> echo $RESULT


> RESULT=`grep "HENRY" <file158 | grep "SMITH" | tr "[:print:]" "Y" | tr -s "Y"`
> echo $RESULT
Y

# 11  
Old 01-30-2009
Code:
grep SMITH `grep -l BOB *`

This one looks for smith in files where bob exists.
# 12  
Old 01-30-2009
egrep '(BOB.*SMITH|SMITH.*BOB)' files

this one checks for bob and smith in the same line, any combination.
# 13  
Old 01-31-2009
Quote:
Originally Posted by mojoman
I have to scan through logs to make sure that two words appear on the same line: sshd and illegal.
Your original solution worked completely fine then, you were testing it wrong by expecting it to work across lines too.
 
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