Linux Command Line (43) awk pt1
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awk is a programming language, not as complete as Perl or C, but it is a programming language.
A typical awk script will start with awk then have a condition, code, then an input file filename.
awk has some built in variables like NF for Number of Fields and NR for number of Records. These variables can be used as a condition for what rows to update or select.
awk can be used to do the same things as grep
By default, awk identifies fields separated by white-space. An input file delimiter can giving to separate fields by something other than white-space. To set fields by specific columns those columns will need to be defined int he variable FIELDWIDTHS.
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