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Full Discussion: bash - batch processing folder of files by name
Top Forums Shell Programming and Scripting bash - batch processing folder of files by name Post 302333474 by imtombi on Monday 13th of July 2009 07:14:12 AM
Old 07-13-2009
bash - batch processing folder of files by name
Hello Everyone!!!

I need some help with a shellscript to batch process a folder of files with the imagemagick convert -append/+append command. The folder contains some hundred or thousand of small images in .png format which I would like to join together in order of their filenames. The filenames follow a pattern like this:

File 1: 11.123456_8.043589.png
File 2: 11.123456_9.320411.png
File 3: 12.843211_8.043589.png
File 4: 12.843211_9.320411.png

What I want to do is join all files with the same number in the first part of the filename (before the underscore) with the convert +append command to a row and afterwards join these rows together with the convert -append comand. This could also be a second script, if easier.
I figured out the imagemagick part of this, but as an absolute beginner to shellscripting, I have no clue how to get a appropriate shellscript up and running. I have searched the forum but didn't find anything that worked out for me or pointed me in the right direction. I would really appreciate some help here!

Greetings,

Gerd
 

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LEARN ABOUT OSF1

rmf

rmf(1)							      General Commands Manual							    rmf(1)

NAME

       rmf - remove folder (only available within the message handling system, mh)

SYNOPSIS

       rmf [+folder] [-help] [-[no]interactive]

OPTIONS

       Prints  a  list of the valid options to this command.  Asks for confirmation before deleting a folder. By default, rmf deletes a folder and
       its messages without asking for confirmation.  If you specify the -interactive option, rmf asks if you are sure before deleting the folder.
       You are advised to use this option, since when rmf deletes a folder its contents are lost irretrievably.

DESCRIPTION

       The  rmf  command  removes all of the messages within the current folder, and then removes the folder itself. If there are any files within
       the folder which are not part of MH, they are not removed, and an error message is displayed.

       You can specify a folder other than the current folder by using the +folder argument. If you do not specify a folder, and rmf  cannot  find
       the current folder,rmf asks you whether you want to delete +inbox instead.

       If the current folder is removed, it makes +inbox current.

       Note that the rmf command irreversibly deletes messages that do not have other links, so use it with caution.

       If  the	folder	being removed is a sub-folder, the parent folder becomes the new current folder, and rmf tells you that this has happened.
       This provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list and returning to the current
       folder from which the list was extracted.

       Using  rmf  to  delete a read-only folder deletes the private sequence and current message information from the file, without affecting the
       folder itself. If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself.

PROFILE COMPONENTS

       Path: To determine the user's Mail directory

EXAMPLES

       This example shows how rmf asks for confirmation when the -interactive option is used: % rmf -interactive +test Remove folder "test"? y

FILES

       The user profile.

SEE ALSO

       rmm(1)

																	    rmf(1)
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