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Top Forums Shell Programming and Scripting How to use function 'rename' ? Post 302772474 by mirni on Monday 25th of February 2013 08:02:27 PM
Old 02-25-2013
OP might have in mind the rename(1) utility, part of the util-linux package. There are a couple versions that I know of, the one on RedHat based systems has a manual of only one page and your exact problem with the solution is listed there, as an example:
Quote:
EXAMPLES
Given the files foo1, ..., foo9, foo10, ..., foo278, the commands

rename foo foo0 foo?
rename foo foo0 foo??

will turn them into foo001, ..., foo009, foo010, ..., foo278.
Other systems use rename written in perl (sometimes called prename) which uses regexp syntax and have a useful -n switch (dry-run).
There it would be something like:
Code:
prename -n 's/_([0-9])\./_00$1./' file* 
prename -n 's/_([0-9][0-9])\./_0$1./'  file*

See manual page for your version.

A universal solution with the added educational benefits would be to use printf:
Code:
for i in file_* ; do
  n=$(cut -d_ -f2 <<<$i)
  echo mv $i file_$(printf "%03d" $n) 
done


Last edited by mirni; 02-25-2013 at 09:16 PM..
 

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CLASSKIT_METHOD_RENAME(3)						 1						 CLASSKIT_METHOD_RENAME(3)

classkit_method_rename - Dynamically changes the name of the given method

SYNOPSIS
bool classkit_method_rename (string $classname, string $methodname, string $newname) DESCRIPTION
Note This function cannot be used to manipulate the currently running (or chained) method. Warning This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk. PARAMETERS
o $classname - The class in which to rename the method o $methodname - The name of the method to rename o $newname - The new name to give to the renamed method RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 classkit_method_rename(3) example <?php class Example { function foo() { return "foo! "; } } // Rename the 'foo' method to 'bar' classkit_method_rename( 'Example', 'foo', 'bar' ); // output renamed function echo Example::bar(); ?> The above example will output: foo! SEE ALSO
classkit_method_add(3), classkit_method_copy(3), classkit_method_redefine(3), classkit_method_remove(3). PHP Documentation Group CLASSKIT_METHOD_RENAME(3)
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