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Perl expression

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# 1  
Old 08-03-2010
Perl expression
I need to calculate the number of pipes '|' coming in my expression.
My expression consists of alphanumeric text including special charactres seperated by colon ':'

W1:W2|W3:W4|W5:W6 .. likewise

I need to calculate number of pipes '|' occuring in them

eg
Code:
aaaa : bbbb | cc@34% : ndmmdmd|eeeee:fffff0909|rrr:97892$$$

this contains 3 pipes.

Kindly help with a perl expression
Last edited by Yogesh Sawant; 08-03-2010 at 07:47 AM..
# 2  
Old 08-03-2010
Hi

maybe this:

Code:
sed  's/|/\n|/g' file | awk '/^|/{c++}END{print c-1}'

# 3  
Old 08-03-2010
i wrote a one-liner:
Code:
perl -e ' my $str = "aaaa : bbbb | cc@34% : ndmmdmd|eeeee:fffff0909|rrr:97892$$$";  while ($str =~ m/\|/g) { $count++; } print $count, "\n";'

hope you get the point.
# 4  
Old 08-03-2010
Can also be done as,

Code:
$ echo 'bbbb | cc@34% : ndmmdmd|eeeee:fffff0909|rrr:97892$$$' | perl -a -F'\|' -nle 'print $#F'

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