Shell Programming and Scripting

Hello,

I have lots of sequentially numbered files which make up an image sequence.

I'm trying to do two things with it:

#1: Find gaps in the sequence and move each range of sequencial files into their own subfolder.

#2: Designate a starting point (file) and move every 24th file into another subfolder.

The files are named like this:

AAAA_000001
AAAA_000002
... (continuous)
AAAA_120001
AAAA_120002
AAAA_125000 (sequence break)
AAAA_125001
... (continuous)
AAAA_150001
AAAA_150002
etc...

I figure the best is to put it into two scripts, but I'm can't find a good starting point for either task. I don't know how to identify the range of the sequence so I can make a list to move the files.

Any ideas?


Many thanks

I dont understand your requirements...so try to be clear and post sample input and output.

Plus, what if the missing file is the last? Is there a clue in the first of the #? What if #1 is missing? Generic solution: any is clue to #1, #1 is clue to all. Start with every prefix "find . . . | sed '. . .' | sort -u | while read prefix, do, look for ${prefix}00001, get clue, look for all the children, done".

The missing files are not so important, in fact they are not really missing.

Let me try another way of explaining it, and let me focus on just the sequence organization.

I have a folder with the following file sequence ranges:
/media/images/
AAAA_[0000-1000].jpg
AAAA_[2000-3000].jpg
AAAA_[4000-5000].jpg
AAAA_[6000-8000].jpg

So 4 groups total, only I don't know how long they are, what number they start at, or how many digits the numbers have. The prefix and extension are set.

I want to create folders using the first file number in sequence:

/media/images/AAAA_0000
/media/images/AAAA_2000
/media/images/AAAA_4000
/media/images/AAAA_6000

and move each sequence into its folder.

Is this more clear?

Sure, ksh/bash not sed can do same:

Code:

find ... -name AAAA_*00.jpg | while read f
do
 mkdir ${f%.jpg}
 mv ${f%00.jpg}*.jpg ${f%.jpg}/
done

More speed?

Code:

find ... -name AAAA_*00.jpg | sed 's/\.jpg$//' | xargs -n999 mkdir
find ... -name AAAA_*00.jpg | sed 's/\(\(.*\)00\)\.jpg$/mv \2*.jpg \1/' | sh