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How do I search a File for a string exact match

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# 1  
Old 07-28-2008
Question How do I search a File for a string exact match
Hi, Can you help please.

I have the following comand:
if [[ `grep $l_string $l_tmp_file | tr -d ' '` = $l_string ]]; then
l_valid_string="Y"
fi
The problem I am trying to solve is that my l_string = ABC and my file contains
ABC
ABC_EFG

I only want back the value ABC exact match.
# 2  
Old 07-28-2008
try this one:
Code:
grep '['$l_string']$' $l_tmp_file

# 3  
Old 07-28-2008
Thank You
Awesome, Thank you very much, that worked.
# 4  
Old 07-29-2008
Only coincidentally, actually. The addition of the square brackets is probably not correct, if I managed to understand your requirements.

You are trimming whitespace with tr -d ' ' -- are we to infer that spaces are allowed in the file before or after the match, on the same line?

Code:
grep "^ *$l_string *$" $l_tmp_file

If you don't want to allow spaces, remove both occurrences of space, asterisk.
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