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Full Discussion: Find filenames with three digits and add zeros to make five digits
Top Forums Shell Programming and Scripting Find filenames with three digits and add zeros to make five digits Post 302591184 by agama on Wednesday 18th of January 2012 07:59:23 PM
Old 01-18-2012
Probably lots of ways to do this. You can pipe the output of a find command through this small awk which will generate the mv commands.

Code:
find . -type f | awk '{ o = $0; split( $NF, a, "." ); $(NF)=sprintf( "%05d.%s", a[1], a[2] ); printf( "mv \"%s\" \"%s\"\n", o, $0 ); }'

You can then pipe the output through your favorite shell to actually execute the moves (verify that they look good, and no undesired file is being affected. It's generic so it will handle any suffix (.jpg, .png, etc.). It does assume that in the bag of words in the middle, the last word and the number are separated by a space.
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LEARN ABOUT LINUX

prename

RENAME(1)						 Perl Programmers Reference Guide						 RENAME(1)

NAME

       rename - renames multiple files

SYNOPSIS

       rename [ -v ] [ -n ] [ -f ] perlexpr [ files ]

DESCRIPTION

       "rename" renames the filenames supplied according to the rule specified as the first argument.  The perlexpr argument is a Perl expression
       which is expected to modify the $_ string in Perl for at least some of the filenames specified.	If a given filename is not modified by the
       expression, it will not be renamed.  If no filenames are given on the command line, filenames will be read via standard input.

       For example, to rename all files matching "*.bak" to strip the extension, you might say

	       rename 's/.bak$//' *.bak

       To translate uppercase names to lower, you'd use

	       rename 'y/A-Z/a-z/' *

OPTIONS

       -v, --verbose
	       Verbose: print names of files successfully renamed.

       -n, --no-act
	       No Action: show what files would have been renamed.

       -f, --force
	       Force: overwrite existing files.

ENVIRONMENT

       No environment variables are used.

AUTHOR

       Larry Wall

SEE ALSO

       mv(1), perl(1)

DIAGNOSTICS

       If you give an invalid Perl expression you'll get a syntax error.

BUGS

       The original "rename" did not check for the existence of target filenames, so had to be used with care.	I hope I've fixed that (Robin
       Barker).

perl v5.12.4							    2011-08-10								 RENAME(1)
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