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Full Discussion: Need Help on a "simple" awk
Top Forums Shell Programming and Scripting Need Help on a "simple" awk Post 302391766 by LucMat73 on Tuesday 2nd of February 2010 12:29:27 PM
Old 02-02-2010
Still need help on a "simple" awk

Hello all,

first of all, thank you very much for your help. In order to print A1, A2, A3 (first three columns from FileA), B3 (third column from File B), I have tried to edit the script modified by ahmad.diab as follows:

NR==FNR{a[$1]=$1;b[$2]=$2;next} ($1 in a) && ( $2 in b ) { print a[$1],b[$2],$3,$3 } FileA FileB

But what I obtained is A1, A2, B3, B3. No way to print A3....

Could someone provide me some help please?

Thank you in advance,
Luca
 

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SHTOOL-PATH.TMP(1)					      GNU Portable Shell Tool						SHTOOL-PATH.TMP(1)

NAME
shtool-path - GNU shtool command dealing with shell path variables SYNOPSIS
shtool path [-s|--suppress] [-r|--reverse] [-d|--dirname] [-b|--basename] [-m|--magic] [-p|--path path] str [str ...] DESCRIPTION
This command deals with shell $PATH variables. It can find a program through one or more filenames given by one or more str arguments. It prints the absolute filesystem path to the program displayed on "stdout" plus an exit code of 0 if it was really found. OPTIONS
The following command line options are available. -s, --suppress Supress output. Useful to only test whether a program exists with the help of the return code. -r, --reverse Transform a forward path to a subdirectory into a reverse path. -d, --dirname Output the directory name of str. -b, --basename Output the base name of str. -m, --magic Enable advanced magic search for ""perl"" and ""cpp"". -p, --path path Search in path. Default is to search in $PATH. EXAMPLE
# shell script awk=`shtool path -p "${PATH}:." gawk nawk awk` perl=`shtool path -m perl` cpp=`shtool path -m cpp` revpath=`shtool path -r path/to/subdir` HISTORY
The GNU shtool path command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1998 for Apache. It was later taken over into GNU shtool. SEE ALSO
shtool(1), which(1). 18-Jul-2008 shtool 2.0.8 SHTOOL-PATH.TMP(1)
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