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Top Forums UNIX for Dummies Questions & Answers Calculating cumulative frequency using awk Post 302742087 by balajesuri on Monday 10th of December 2012 02:04:11 PM
Old 12-10-2012
Ha, ha! Another classic example of changing requirements. Ok, here's some light:

if($. == 1) {print; next} ==> This part of the code checks if line in consideration is line #1 and if so prints the line as-is and proceeds to next line. This is because, from your initial sample in post #1, first line is the header line (obs freq (1/n) cumfreq).

Here's one to suit your requirement from post #5:
Code:
perl -lane '$x+=eval $F[1]; print "$F[0]\t$F[1]\t$x"' file

This User Gave Thanks to balajesuri For This Post:
 

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line(1)                                                            User Commands                                                           line(1)

NAME
line - read one line SYNOPSIS
line DESCRIPTION
The line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal. EXIT STATUS
Exit status is: 0 Successful completion >0 End-of-file on input. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
sh(1), read(2), attributes(5) SunOS 5.10 1 Feb 1995 line(1)
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