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Full Discussion: Shell Scripting , Moving Old file to specific folder
Homework and Emergencies Homework & Coursework Questions Shell Scripting , Moving Old file to specific folder Post 302917494 by Don Cragun on Wednesday 17th of September 2014 05:27:24 AM
Old 09-17-2014
Invoking a utility (such as awk or date) that is not a built-in in the shell is a relatively expensive operation. If you invoke a utility like once for every file in a directory when it only needs to be invoked once or if you invoke two utilities when only one is needed, your script will be relatively inefficient and slow. Instead of invoking awk and date once for every log file in the directory, would it be possible to:
  1. invoke awk just once:
    1. giving it $date_30_days as a variable,
    2. feeding each log file name to it as one line to be read from standard input,
    3. having awk convert the string form of the file's date to a numeric string instead of invoking the date utility to perform that conversion,
    4. lelting your awk script do the date comparisons as well as changing the date format, and
    5. just printing the names of the files that need to be moved?
  2. letting your shell script read the output from the above awk script and performing the moves for the filenames awk prints, and
  3. only printing NO OLD FILES if the awk script does not return the names of any files to move?
 

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LEARN ABOUT CENTOS

debconf-mergetemplate

DEBCONF-MERGETEMPLATE(1)					      Debconf						  DEBCONF-MERGETEMPLATE(1)

NAME

       debconf-mergetemplate - merge together multiple debconf template files

SYNOPSIS

	debconf-mergetemplate [options] [templates.ll ...] templates

DESCRIPTION

       Note: This utility is deprecated. You should switch to using po-debconf's po2debconf program.

       This program is useful if you have multiple debconf templates files which you want to merge together into one big file. All the specified
       files will be read in, merged, and output to standard output.

       This can be especially useful if you are dealing with translated template files. In this case, you might have your main template file, plus
       several other files provided by the translators. These files will have translated fields in them, and maybe the translators left in the
       english versions of the fields they translated, for their reference.

       So, you want to merge together all the translated templates files with your main templates file. Any fields that are unique to the
       translated files need to be added in to the correct templates, but any fields they have in common should be superseded by the fields in the
       main file (which might be more up-to-date).

       This program handles that case properly, just list each of the translated templates files, and then your main templates file last.

OPTIONS

       --outdated
	   Merge in even outdated translations. The default is to drop them with a warning message.

       --drop-old-templates
	   If a translation has an entire template that is not in the master file (and thus is probably an old template), drop that entire
	   template.

SEE ALSO

       debconf-getlang(1)

AUTHOR

       Joey Hess <joeyh@debian.org>

								    2012-09-10						  DEBCONF-MERGETEMPLATE(1)
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