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Shell Programming and Scripting
Help a newbie please with awk if else statements
Post 302244544 by jonathanm on Wednesday 8th of October 2008 06:41:41 AM
10-08-2008
Quote:
Looking at this again, I think you're confused about how awk works. Each line is compared to each pattern, in turn, and if there is a match, the "program" part (for each pattern that matches) is then run, in turn. After all input is consumed, THEN the "END" block is executed. To have one of these programs "skip" to the next line, use "next;".
Quote:
1. I'm not sure what you are trying to do with the NR==1 line (you never write to new_fname). You can output to a file with "printf expr list >filename".
Quote:
2. You're not using sprintf() in a meaningful way, except to avoid printing out a newline. You can just do "print $1, $38, $50", except that a newline will be appended. But I don't see why you're using it this way.
Quote:
Code:
length(output) { print output > newfilename }
/badfield/ { output=""; next; }
/goodfield/ { output=output "blah blah"; next; }
/other/ { output="fubar"; }
...
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