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more elegant one?

Posted on 1998-07-01
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Last Modified: 2010-03-04
hello,
a perl code should find in specified directory recursively all the file ended with given suffix1  and rename it to file ended with given suffix2.(behave like mv *.aa *.bb)  


$suffix1='.aa';
$suffix2='.bb';

@f=`find $path -type f -name '*$suffix1'`;

foreach $x (@f){
 chop($x);#get rid of \n
 $tem=$x;
 $tem=~ s/$suffix1$/$suffix2/;

  `mv $x $tem`;

}

I wonder whether there is better way to implement it.
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Question by:tian
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6 Comments
 
LVL 2

Expert Comment

by:bertvermeerbergen
ID: 1208257
Instead of running shell commands (launching a seperate shell every time), you could use the rename function and the File::Find library module

Example:

#-- The subroutine called by find for every entry
sub DoSomething
{
  #-- $File::Find::dir contains the current directory (chdir() has been done)
  #-- $_ contains the current file or subdir name
  #-- $File::Find::name is "$File::Find::dir/$_"

  here, you check for matching entry and then use perl rename function

}

#-- (this is in your main or some other subroutine)
#-- Parameters:
#--   1: A reference to the subroutine to be called for every item
#--   2: The top-level directory you want to scan
find(\&DoSomething, $path);
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LVL 51

Accepted Solution

by:
ahoffmann earned 50 total points
ID: 1208258
$suffix1='.aa';
$suffix2='.bb';

@f=`find $path -type f -name '*$suffix1'|sed -e 's/\(.*\)$suffix1/mv & \1$suffix2|sh`;


# works, even without perl ;-)
0
 

Author Comment

by:tian
ID: 1208259
Thanks  ahoffmann. Before I close this question, can someone provide me an implementation based on bertvermeerbergen's idea?

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LVL 84

Expert Comment

by:ozo
ID: 1208260
use File::Find;
find(\&DoSomething, $path);
sub DoSomething {
 my $tem;
 -f && ($tem=$_)=~s/\Q$suffix1\E$/$suffix2/ && rename($_,$tem);
}

0
 

Author Comment

by:tian
ID: 1208261
thank you
0
 
LVL 51

Expert Comment

by:ahoffmann
ID: 1208262
tian, are you shure that the points are for my and not for ozo's suggestion?
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