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Full Discussion: Recursive File Renaming & Natural Sorting (Bash)
Top Forums Shell Programming and Scripting Recursive File Renaming & Natural Sorting (Bash) Post 302749637 by Corona688 on Friday 28th of December 2012 06:31:39 PM
Old 12-28-2012
This kind of problem always seems so easy until you try. I've made many attempts, but they're never quite satisfactory. I haven't found any kind of general solutions that humans can't break, and trying to fix up the corners just makes it easier to confuse.

Imagine this sequence of files for instance.

Code:
file1.jpg
file2.jpg
...
file8.jpg
file9.bmp
file10.jpg

Is it part of the sequence, or is it not? It's ambiguous.

Or how about this one:

Code:
cover.jpg
asd1.jpg
asd2.jpg
asd3.jpeg

Does cover belong at the beginning or the end, and how would you tell a program to know this? Are you sure the cover will always belong at the beginning?

Should we assume the jpeg is a typo because they have the same prefix of asd? Where does the prefix start, where does it end, and how is it deliniated from the rest?

Or this sequence:

Code:
cover for some file name containing 1234.jpg
some file name containing 1234 #1.jpg
some file name containing 1234 #1.jpg
some file name containing 1234 #1.jpg
...
some file name containing 1234 #365.jpg

Do 'cover for some file name containing 1234' and 'some file name containing 1234 #' belong to the same sequence or not? Should # be considered part of the name?

And what happens when you get a sequence like this?

Code:
1a.jpg
1b.jpg
1c.jpg
1.jpg
2.jpg
3.jpg
4.jpg

You end up tacking on special case after special case after special case onto your program to handle all these special things -- and then you get something like this thrown at you:

Code:
file1a.jpg
file2a.jpg
file3a.jpg
file4a.jpg

Or maybe the files all have 'cover' in their name so they all end up being 'special' and jammed in first in no particular order, or even skipped. Or this, or that, or a million other things.

If humans would just name their files in rational, consistent, predictable ways, they wouldn't need reordering. But all too often human context is needed to explain where things belong.
 

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LEARN ABOUT CENTOS

jpgicc2

JPEGICC(1)						      General Commands Manual							JPEGICC(1)

NAME

       jpegicc - little cms ICC profile applier for JPEG.

SYNOPSIS

       jpegicc [options] input.jpg output.jpg

DESCRIPTION

       lcms is a standalone CMM engine, which deals with the color management.	It implements a fast transformation between ICC profiles.  jpegicc
       is little cms ICC profile applier for JPEG.

OPTIONS

       -b     Black point compensation.

       -c <0,1,2,3>
	      Precalculates transform. (0=Off, 1=Normal, 2=Hi-res, 3=LoRes) [defaults to 1]

       -g     Marks out-of-gamut colors on softproof.

       -h <0,1,2>
	      Show summary of options and examples.

       -i profile
	      Input profile (defaults to sRGB).

       -m <0,1,2,3>
	      SoftProof intent.

       -n     Ignore embedded profile.

       -p profile
	      Soft proof profile

       -o profile
	      Output profile (defaults to sRGB).

       -q <0..100>
	      Output JPEG quality.

       -t <0,1,2,3>
	      Intent (0=Perceptual, 1=Colorimetric, 2=Saturation, 3=Absolute).

       -v     Verbose.

EXAMPLES

       To color correct from scanner to sRGB:
	    jpegicc -iscanner.icm in.jpg out.jpg

       To convert from monitor1 to monitor2:
	    jpegicc -imon1.icm -omon2.icm in.jpg out.jpg

       To make a CMYK separation:
	    jpegicc -oprinter.icm inrgb.jpg outcmyk.jpg

       To recover sRGB from a CMYK separation:
	    jpegicc -iprinter.icm incmyk.jpg outrgb.jpg

       To convert from CIELab ITU/Fax JPEG to sRGB
	    jpegicc -iitufax.icm in.jpg out.jpg

NOTES

       For suggestions, comments, bug reports etc. send mail to info@littlecms.com.

SEE ALSO

       tifficc(1), icc2ps(1), icclink(1), icctrans(1), wtpt(1)

AUTHOR

       This manual page was written by Shiju p. Nair <shiju.p@gmail.com>, for the Debian project.

								September 30, 2004							JPEGICC(1)
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