"replace text" function i unknown langage... help

[otey]

Hi..
Im no skilled programmer.. only do PHP and a tiny bit of java-script, so i was wondering if anybody would help me out at this

This code is from my .abcde.conf file, and it is surpose to do something like transformig spaces and / to underscores and some other stuff..

The conf-files description is this:
# Custom filename munging:
# By default, abcde will do the following to CDDB data to get a useful
# filename:
# * Translate colons to a space and a dash for Windows compatibility
# * Eat control characters, single quotes, and question marks
# * Translate spaces and forward slashes to underscores
# * Translate stars into pluses.
# To change that, redefine the mungefilename function.
# mungefilename recieves the CDDB data (artist, track, title, whatever)
# as $1 and outputs it on stdout.
#mungefilename ()
#{
#echo "$@" | sed s,:,\ -,g | tr \ /\* __+ | tr -d \'\"\?\[:cntrl:\]
#}

What language is this?
Were can i learn to understand this function?

I would be very happy if someone could explane this to me, and maybe give me an example where the spaces are not converted to underscores, and the slashes are converted to "-" instead of underscores.

[frodon]

You need to learn what are regular expressions : http://www.comp.lancs.ac.uk/computing/users/eiamjw/unix/chap10.html

So to conver spaces and / to underscore the corresponding sed command is : sed "s/[ /]/_/g" input_file > output_file"s" mean substitute, in the "[]" is the list of the characters you want to match (here space and /), _ is the character used for replacement and g tell sed to do it each time it meet a matching character.
the sintax of sed for replacement is : sed "s/PATTERN_TO_MATCH/PATTERN_TO_SUBSTITUTE/g" inputfile > outputfile