Awk's basic syntax is <expression> {<code-block>}. If expression evaluates to true, the associated block is executed. Either may be omitted; if the expression is omitted, true is assumed, and if the code block is omitted "print" is assumed. 1 evaluates as the expression to true, and so the single 1 imples 1 { print }.
---------- Post updated at 10:42 ---------- Previous update was at 10:37 ----------
Looking at the example you gave, this is how I would have written it:
It might be easier to see the difference if not smashed all on one line:
Last edited by agama; 07-28-2012 at 11:44 AM..
Reason: typo
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Discussion started by: jmccoughlin
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LEARN ABOUT DEBIAN
igawk
IGAWK(1) Utility Commands IGAWK(1)NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)