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Changing the character after the Underscore(_)

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# 1  
Old 03-21-2012
Changing the character after the Underscore(_)
Hi Everyone,

I am looking for a command that would do the following:

1) Change all the letters/words in a file to Lower case Letters/words.
2) Remove the Underscore (_) and Change the Character after the underscore (_) to an Uppercase letter.

Example:

Code:
File contains the below words:

FILTER_WORD
USA_NEWJERSEY
USA_NEWYORK_NYC

Output should be:
filterWord
usaNewjersey
usaNewyorkNyc

It would be really helpful if someone could help me out achieving this.

Thanks a lot for all your time!!!
# 2  
Old 03-21-2012
Code:
$ perl  -alne '$_=~s/_/ /g; $_=~s/(\w+)/\u\L$1/g;$_=~s/ //g;print lcfirst $_' input.txt
filterWord
usaNewjersey
usaNewyorkNyc

This User Gave Thanks to itkamaraj For This Post:
filter
# 3  
Old 03-21-2012
Code:
perl -pe '$_=lc;while(/_([a-z])/g){$x=$1;$y=uc($x);s/_$x/$y/g}' inputfile

This User Gave Thanks to balajesuri For This Post:
filter
# 4  
Old 03-21-2012
awk
Hi,

Here is the awk solution,

Code:
 awk '{$0=tolower($0);while(match($0,"_")){l=substr($0,match($0,"_"),2);L=toupper(l);sub(l,L);sub(/_/,"");}}1' file


Cheers,
RangaSmilie
This User Gave Thanks to rangarasan For This Post:
filter
# 5  
Old 03-21-2012
Thank you very much for all your quick replies.

Its really helpful.
# 6  
Old 03-21-2012
Shorter:
Code:
perl -pe '$_=lc;s/_([a-z])/\u$1/g' inputfile

This User Gave Thanks to balajesuri For This Post:
filter
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