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String operation in csh shell


 
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# 8  
Old 02-22-2017
It's the geek version of {print}.
In fact it gives a non-zero =true value in an implicit if where the default action is {print}.
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# 9  
Old 02-22-2017
A code block followed by an expression like that, prints the line whenever the expression is true. As an expression, 1 is always true.

The code block is actually optional. Just awk '1' filename will print every line... awk '/string/' filename will match every line matching "string" (where the regex evaluates true), etc. It's a useful on-off switch for printing.

Last edited by Corona688; 02-22-2017 at 11:46 AM..
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# 10  
Old 02-22-2017
Note that since an assignment returns the value assigned and since the value being assigned is not an empty string and is not zero, the script can be written as just a condition with the default action simplifying the script to just:
Code:
awk -F';' '$2=5' OFS=';' inputfile > outputfile

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# 11  
Old 02-23-2017
Thanks a lot to everybody
for your fast Response and a Explanation for my question
With Kind regards

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