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Full Discussion: Need help understanding this script.
Top Forums Shell Programming and Scripting Need help understanding this script. Post 302466184 by Scrutinizer on Monday 25th of October 2010 09:21:01 PM
Old 10-25-2010
It tries to rename any file with 2-2-4 digit date in the name and replace that date with a new date, but it contains an error as the dot should not be there.
It use parameter expansion to accomplish this.
Code:
newdate=12-10-1995
for file in *[0-9][0-9]-[0-9][0-9]-[0-9][0-9][0-9][0-9]*
do
  mv "$file" "${file%[0-9][0-9]-[0-9][0-9]-[0-9][0-9][0-9][0-9]*}$newdate${file#*[0-9][0-9]-[0-9][0-9]-[0-9][0-9][0-9][0-9]}"
done

And it is better to put double quotes there.
 

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LEARN ABOUT OSF1

dh_installdebconf

DH_INSTALLDEBCONF(1)						     Debhelper						      DH_INSTALLDEBCONF(1)

NAME

       dh_installdebconf - install files used by debconf in package build directories

SYNOPSIS

       dh_installdebconf [debhelperoptions] [-n] [--params]

DESCRIPTION

       dh_installdebconf is a debhelper program that is responsible for installing files used by debconf into package build directories.

       It also automatically generates the postrm commands needed to interface with debconf. The commands are added to the maintainer scripts by
       dh_installdeb. See dh_installdeb(1) for an explanation of how that works.

       Note that if you use debconf, your package probably needs to depend on it (it will be added to ${misc:Depends} by this program).

       Note that for your config script to be called by dpkg, your postinst needs to source debconf's confmodule. dh_installdebconf does not
       install this statement into the postinst automatically as it is too hard to do it right.

FILES

       debian/package.config
	   This is the debconf config script, and is installed into the DEBIAN directory in the package build directory.

	   Inside the script, the token #DEBHELPER# is replaced with shell script snippets generated by other debhelper commands.

       debian/package.templates
	   This is the debconf templates file, and is installed into the DEBIAN directory in the package build directory.

       debian/po/
	   If this directory is present, this program will automatically use po2debconf(1) to generate merged templates files that include the
	   translations from there.

	   For this to work, your package should build-depend on po-debconf.

OPTIONS

       -n, --no-scripts
	   Do not modify postrm script.

       -- params
	   Pass the params to po2debconf.

SEE ALSO

       debhelper(7)

       This program is a part of debhelper.

AUTHOR

       Joey Hess <joeyh@debian.org>

11.1.6ubuntu2							    2018-05-10						      DH_INSTALLDEBCONF(1)
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