passing arguments to awk scripts
William R. Pringle
wrp at PRC.Unisys.COM
Mon Mar 11 13:25:26 AEST 1991
In article <10094 at uwm.edu> datta at vacs.uwp.wisc.edu (David Datta) writes:
>Can it be done? Is there a way I can address a
>command line argument within the script?
Awk (nawk, gawk, etc.) accept arguments as keyword-value pairs when
entered from the command line. For example, to pass the current directory
to awk, type something like: PWD=`pwd`, for your home directory,
HOME=${HOME}, etc.
For example, the following file (asdf):
#!/bin/sh
awk '{printf "Line %d of %s/%s: >>%s<<\n", NR, Pwd, FILENAME, $0}' \
Pwd=`pwd` asdf
produces the following output:
Line 1 of /guests/wrp/asdf: >>#!/bin/sh<<
Line 2 of /guests/wrp/asdf: >><<
Line 3 of /guests/wrp/asdf: >>awk '{printf "Line %d of %s/%s: >>%s<<\n", NR, Pwd, FILENAME, $0}' \<<
Line 4 of /guests/wrp/asdf: >> Pwd=`pwd` asdf<<
Bill Pringle
wrp at prc.unisys.com
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