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Help to fetch first two characters from a word in perl

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# 1  
Old 05-21-2010
Help to fetch first two characters from a word in perl
Hi All,
I have a word "DE_PR_Package__Basic" , i need to check if the first two characters of this words is DE or something else using perl script.
Can anyone pls let me know how to proceed?

Thanks in advance.
Giri!
# 2  
Old 05-21-2010
Depends on how you want to proceed with that information. To just print the line if a word matches your requirements:
Code:
perl -ne 'print if /\bDE_[\w_]+?/;' input.txt

If you want just the remainder of the word:
Code:
perl -ne 'print $1 if /\bDE_([\w_]+?)/' input.txt

This User Gave Thanks to pludi For This Post:
girish.raos
# 3  
Old 05-21-2010
check if this is what you are looking for:
Code:
$word = "DE_PR_Package__Basic";
if ($word=~ m/^DE/) {
    print "matches\n";
}
else {
    print "does not match\n";
}

in the regex, ^ is the start of string. You might want to add _ after DE so that the regex is ^DE_
This User Gave Thanks to Yogesh Sawant For This Post:
girish.raos
# 4  
Old 05-21-2010
Quote:
Originally Posted by pludi
Depends on how you want to proceed with that information. To just print the line if a word matches your requirements:
Code:
perl -ne 'print if /\bDE_[\w_]+?/;' input.txt

If you want just the remainder of the word:
Code:
perl -ne 'print $1 if /\bDE_([\w_]+?)/' input.txt


Thanks a lot Pludi, it was very useful for me.

---------- Post updated at 04:46 AM ---------- Previous update was at 04:45 AM ----------
Quote:
Originally Posted by Yogesh Sawant
check if this is what you are looking for:
Code:
$word = "DE_PR_Package__Basic";
if ($word=~ m/^DE/) {
    print "matches\n";
}
else {
    print "does not match\n";
}

in the regex, ^ is the start of string. You might want to add _ after DE so that the regex is ^DE_
Thanks a lot Yogesh, It was very useful for me.
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