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Full Discussion: printf in awk
Top Forums Shell Programming and Scripting printf in awk Post 302303021 by marcus121 on Wednesday 1st of April 2009 04:10:44 PM
Old 04-01-2009
Yes, %i (and %d) are numeric. %s is character string (whereas %c is a single character).

What this is doing is inputing the csv file (separated by comma) and outputting all but the last field (TESTING) pretty much the same and the grep is saying EXCLUDE (dash-v) lines that have essentially null values across the record. I'm guessing the null values in the records might inconsistant lengths which is why he needs to force the format prior to the grep -v. In other words, these are both null but would require different greps:
Code:
00000000,, , 0, 0,TESTING
0,           ,,0000,0,TESTING

... with the awk printf, they would both have the format '0,,0,0,0,,' though.

As cfa said, you need to escape the semi-colon because it's a control character like pipe, tick, etc.
 

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GNUNET-TESTING(1)					      General Commands Manual						 GNUNET-TESTING(1)

NAME

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SYNOPSIS

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DESCRIPTION

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OPTIONS

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