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How do I split a string containing path+filename

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Contributed by Zombie pr_patil on May 14, 2001 at 18:23 UTC
Q&A  > strings


Description:

I need to separate the filename and path from a string. e.g. $a = "/root/subroot/subsubroot/filename"; I want to separate filename and the path. i.e. The output should be $b = "/root/subroot/subsubroot/" $c = "filename" Thanks

Answer: How do I split a string containing path+filename
contributed by arturo

For maximum portability, use File::Basename, a standard CPAN module:

use File::Basename; use strict; # get full path in $path my $filename = basename($path);
Answer: How do I split a string containing path+filename
contributed by grinder

The complement to basename that arturo forgot to mention is dirname, so your code would look like this:

$a = "/root/subroot/subsubroot/filename"; $b = dirname $a; $c = basename $a;

That said, do not get into the habit of using variables $a and $b. You are much better off giving them descriptive names, which will help your code self-document itself. A better way of writing your code would be

my $filespec = "/root/subroot/subsubroot/filename"; my $path = dirname $filespec; my $filename = basename $filespec;
Answer: How do I split a string containing path+filename
contributed by tye

Don't forget File::Spec/File::Spec.

Answer: How do I split a string containing path+filename
contributed by tachyon

Quick and dirty regex answer (for Unix or DOS): ($b,$c) = $a =~ m|^(.*[/\\])([^/\\]+?)$|; I agree with grinder that your var names are obfu, which has its place, but usually we choose descriptive names like $p and $f or even $pathname and $filename ;-) tachyon

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