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How to delete newline with perl

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Top Forums Shell Programming and Scripting How to delete newline with perl
# 8  
Old 10-15-2010
Quote:
Originally Posted by cola
Please explain this line:
Code:
 $ perl -lne 'print if /./' f24

'print if / ./'
What does the dot character (".") represent in a regular expression?

tyler_durden

Ah... sorry, matrixmadhan - didn't notice your post. I wish the OP puts in just a wee bit of effort into understanding a script before dashing off with a counter post asking for an explanation.
Last edited by durden_tyler; 10-15-2010 at 02:04 AM..
# 9  
Old 10-15-2010
Quote:
Originally Posted by matrixmadhan
. represents any character except a newline ( \n )
I know this.But the normal if expression for perl is like this:
Code:
if(a<b){
    .................
    .................
}

Here it's 'print if /./'

---------- Post updated at 11:44 AM ---------- Previous update was at 11:42 AM ----------
Quote:
Originally Posted by k_manimuthu
Code:
perl -i -pe 's/^\s+$//g' file

Why is g option used for?
If i don't type g ,the result is same.

If i remove g option then it should be for the first case.Shouldn't it?
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