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Full Discussion: For loop inside awk to read and print contents of files
Top Forums Shell Programming and Scripting For loop inside awk to read and print contents of files Post 302817799 by jaldo0805 on Thursday 6th of June 2013 01:08:07 PM
Old 06-06-2013
For loop inside awk to read and print contents of files
Hello,
I have a set of files Xfile0001 - Xfile0021, and the content of this files (one at a time) needs to be printed between some line (lines start with word "Generated") that I am extracting from another file called file7.txt and all the output goes into output.txt. First I tried creating a for loop over the Xfiles, and inside the loop the awk code, but didn't work, I understand I have to use the for loop inside the awk command, but after trying many times, I am not getting the output I am looking for.
So far this is one of the several versions I have:
Code:
awk '/Generated/ {print;getline; for (i in Xfile????); print "$i"; next}' file7.txt > output.txt

So far this gives me an error, now I realized the question mark is not properly understood as 'interchangeable' character within awk, and also the print "$i" prints literally $i and not the content of the corresponding Xfile. I have recently started using more unix commands to try to do more efficiently my work, and its been very useful (whenever I get through this kind of things). I will really appreciate if someone can help me here.
By the way, the output I expect to have on output.txt should look like this:
Code:
<first line saying "Generated ....." from file7.txt>
<content of Xfile0001>
<second line saying "Generated ..." from file7.txt>
<content of Xfile0002>
...
...
...

Thank you very much,
 

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LEARN ABOUT NETBSD

licensecheck

LICENSECHECK(1) 														   LICENSECHECK(1)

NAME

       licensecheck - simple license checker for source files

SYNOPSIS

       licensecheck --help|--version

       licensecheck [--no-conf] [--verbose] [--copyright] [-l|--lines=N] [-i|--ignore=regex] [-c|--check=regex] [-m|--machine] [-r|--recursive]
       list of files and directories to check

DESCRIPTION

       licensecheck attempts to determine the license that applies to each file passed to it, by searching the start of the file for text
       belonging to various licenses.

       If any of the arguments passed are directories, licensecheck will add the files contained within to the list of files to process.

OPTIONS

       --verbose, --no-verbose
	   Specify whether to output the text being processed from each file before the corresponding license information.

	   Default is to be quiet.

       -l=N, --lines=N
	   Specify the number of lines of each file's header which should be parsed for license information. (Default is 60).

       -i=regex, --ignore=regex
	   When processing the list of files and directories, the regular expression specified by this option will be used to indicate those which
	   should not be considered (e.g. backup files, VCS metadata).

       -r, --recursive
	   Specify that the contents of directories should be added recursively.

       -c=regex, --check=regex
	   Specify a pattern against which filenames will be matched in order to decide which files to check the license of.

	   The default includes common source files.

       --copyright
	   Also display copyright text found within the file

       -m, --machine
	   Display the information in a machine readable way, i.e. in the form <file><tab><license>[<tab><copyright>] so that it can be easily
	   sorted and/or filtered, e.g. with the awk and sort commands.  Note that using the --verbose option will kill the readability.

       --no-conf, --noconf
	   Do not read any configuration files. This can only be used as the first option given on the command-line.

CONFIGURATION VARIABLES

       The two configuration files /etc/devscripts.conf and ~/.devscripts are sourced by a shell in that order to set configuration variables.
       Command line options can be used to override configuration file settings.  Environment variable settings are ignored for this purpose.  The
       currently recognised variables are:

       LICENSECHECK_VERBOSE
	   If this is set to yes, then it is the same as the --verbose command line parameter being used. The default is no.

       LICENSECHECK_PARSELINES
	   If this is set to a positive number then the specified number of lines at the start of each file will be read whilst attempting to
	   determine the license(s) in use.  This is equivalent to the --lines command line option.

LICENSE

       This code is copyright by Adam D. Barratt <adam@adam-barratt.org.uk>, all rights reserved; based on a script of the same name from the KDE
       SDK, which is copyright by <dfaure@kde.org>.  This program comes with ABSOLUTELY NO WARRANTY.  You are free to redistribute this code under
       the terms of the GNU General Public License, version 2 or later.

AUTHOR

       Adam D. Barratt <adam@adam-barratt.org.uk>

Debian Utilities						    2013-12-23							   LICENSECHECK(1)
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