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Shell Programming and Scripting
Cutting Part of Output
Post 302472516 by lee.n.doan on Wednesday 17th of November 2010 10:12:15 AM
11-17-2010
Was confused at the nawk for a sec then realized I should be using gawk 
Thanks for all your help guys. I really want to understand why these work though, so could someone explain the '{close(out);out=$(NF-2);print $(NF-3)>>out}' part if its not too much of a hassle?
So gawk -F is using "=" as a delimiter and then splitting up the output that way? then I assume the parts are assigned to $# variables then the $(NF-2 or 3) is getting the 'hostname' and 'domain' parts?
Thanks for all your help guys. I really want to understand why these work though, so could someone explain the '{close(out);out=$(NF-2);print $(NF-3)>>out}' part if its not too much of a hassle?
So gawk -F is using "=" as a delimiter and then splitting up the output that way? then I assume the parts are assigned to $# variables then the $(NF-2 or 3) is getting the 'hostname' and 'domain' parts?
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LEARN ABOUT DEBIAN
shtool-path
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)