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advanced file renaming problem

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Old 08-01-2008
advanced file renaming problem
I know this is probably a question for the newbie forum, where it is also posted, but I thought maybe some of you pros might like to help me out anyway. Here is my problem:

I have to rename a batch of files that look like:
2001_0001.asc
2001_0002.asc
.
2001_0548.asc
2002_0184.asc
.
.
2006_0548.asc

The names are a date code, but they need to be altered such that 2001_0001.asc becomes 2000_183.asc, 2001_0184 becomes 2001_001, and 2006_0548.asc becomes 2006_365.asc.

so, I think it should start like:

for i in `ls*`
do

then things get a bit hazy
I will now convert to semi-programing speak

split aaaa_bbbb.asc into aaaa and bbbb
interpret strings aaaa and bbbb as numbers x and y respectively
if y - 183 < 1,
then x' = x - 1 and y' = y - 183 + 365,
else x' = x and y' = y - 183.
convert numbers x and y to strings aaaa' and bbb' (note the three digits
in bbb such that y' = 1 will convert to bbb' = 001)
rename file i to aaaa'_bbb'.asc

any help would be appreciated
thanks,
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report-gtk

REPORT-GTK(1)							 LIBREPORT MANUAL						     REPORT-GTK(1)

NAME

       report-gtk - GUI tool to analyze and report ABRT problems

SYNOPSIS

       report-gtk [-vpdx] [-e EVENT] [-g GUI_FILE] PROBLEM_DIR

DESCRIPTION

       report-gtk is a graphical tool that reports application crashes and other problems caught by abrtd daemon, or created by other programs
       using libreport. report-gtk works with a single problem saved in specified PROBLEM_DIR. In the expert mode it enables access to and
       manipulation of problem data.

OPTIONS

       -d, --delete
	   Remove PROBLEM_DIR after reporting

       -e EVENT
	   Run only theset EVENTs on PROBLEM_DIR

       -g FILE
	   Alternate GUI file

       -p
	   Add program names to log

       -v, --verbose
	   Be verbose

       -V, --version
	   Display version and exit

       -x, --expert
	   Enabled advanced features

CONFIGURATION

   Reporting work flow configuration
       These configuration files are placed in /usr/share/libreport/workflows.

       Each file has XML formatting with the following DTD:

	   <!ELEMENT workflow	 (name+,description+,events*)>
	   <!ELEMENT name	 (#PCDATA)>
	   <!ATTLIST name	  xml:lang CDATA #IMPLIED>
	   <!ELEMENT description (#PCDATA)>
	   <!ATTLIST description  xml:lang CDATA #IMPLIED>
	   <!ELEMENT events =	 (event)+>
	   <!ELEMENT event =	 (#PCDATA)>

       name
	   User visible name

       description
	   User visible description

       events
	   List of executed events

       event
	   Name of event. If event is not applicable on the problem data or if it is not defined then process continues with next event sibling.

EXAMPLES

   Simple reporting work flow
	   <workflow>
	     <name xml:lang="en">Example</name>
	     <name xml:lang="cs">Piklad</name>
	     <description xml:lang="en">Example description</description>
	     <description xml:lang="cs">Piklad popisu</description>
	     <evetns>
		<event>analyze_example</event>
		<event>collect_example</event>
		<event>report_example</event>
	     </events>
	   </workflow>

AUTHORS

       o   ABRT team

LIBREPORT 2.1.11						    06/18/2014							     REPORT-GTK(1)