Re: extract ouput that counts strings starting with A in the dataset

$output[0] is the first element of the array @output. What you need there is the first character of $line, which is

substr($line, 0, 1) eq 'A'
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Also, there is a precedence problem on your open line. Use or instead of ||, otherwise your statement means

open DATA, ( "<piRNA_Dataset" || die "..." )
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which will never die.

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Re^2: extract ouput that counts strings starting with A in the dataset by MVRS (Acolyte) on Feb 29, 2012 at 05:07 UTC
Thankyou very much choroba , similarly i also want end of the string , but these are of different length , can you suggest me in this	[reply]
Re^3: extract ouput that counts strings starting with A in the dataset by choroba (Cardinal) on Feb 29, 2012 at 15:58 UTC
The last character is `substr $line, -1` [download] If you do not `chomp` your input, though, this might return end-of-line.	[reply] [d/l] [select]