http://www.perlmonks.org?node_id=1001315

skyworld_chen has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I see a piece of code as

 die "\e[5;31;42m ERROR: $lib_setup FILE does not exist in DIRECTORY: $setupDir/\e[0m\n" unless (-f "$setupDir/$lib_element");

can anybody help me to understand the symbol for "\e[5;31;42m" mean? thanks