my %config = (workingDir => '/root/working/');
my $filename = 'test.pl';

my $fullpath = $config{'workingDir'}.$filename;

print "Dir: $config{'workingDir'}\n";
print "File: $filename\n";
print "Full path: $fullpath\n";
[download]

Produces the output

Dir: /root/working/
File: test.pl
Full path: /root/working/test.pl
[download]

Which is exactly what I expected.

So the error is likely in a part of the code that you don't show us, which is unfortunate because it means we can't help you.

Hi, I am using a sub to read a config file, store it in a hash and then return the value.

sub get_config {
    my %config;
    open (CONFIG, "$CONFIG_FILE") or die "Error: $!\n";
    while (my $line = <CONFIG>){
    #  verbose($line);
    chomp($line);

    if($line =~ m/WORKING_DIR=(.*)/){
        $config{"workingDir"} = $1;
        verbose("Working Dir: ".$config{"workingDir"}."\n");
    }elsif($line =~ m/INPUT_FILE=(.*)/){
        $config{"inputFile"} = $1;
        verbose("Input File: ".$config{"inputFile"}."\n");
    }elsif($line =~ m/MAP_FILE=(.*)/){
        $config{"mapFile"} = $1;
        verbose("Map file: ".$config{"mapFile"}."\n");
    }
    }
    
    close(CONFIG);
    
    return %config;
}
[download]

The config file looks like this:

WORKING_DIR=/root/working/
INPUT_FILE=test.in
MAP_FILE=test.map
[download]

I tried your code and the returned hash was:

workingDir /root/working/ 
mapFile test.map 
inputFile test.in
[download]

which looks fine to me. One possibility is that you night have a "\r" in the data (did the config file come from Windows?) or in a print statement instead of a "\n".

Update: It is possible to reproduce yur problem with a "\r" appended to the WORKING_DIR in your config file.

There could be (invisible) control-characters, for example backspaces, in your config file. To see if your strings have any control-characters in them, you might use Data::Dumper:

use Data::Dumper;
$Data::Dumper::Useqq=1;
print Dumper(\%config);
[download]

Your code does not seem to produce that result. However, I notice if you overlay "test.pl" on top of the string "/root/working/" you get "test.plorking/".

I'd bet dollars to donut's you have a carriage return character ("\r") at the end of $config{'workingDir'}. Try:

$config{workingDir}=~s/\s+$//g;
[download]

Edit: The carriage return could also be at the front of $filename, but it seems far more likely it is at the end of $config{workingDir}. My guess: the hash %config is probably read in from a file created on a windows system, but the code ir running in *NIX. Windows uses: "\r\n" at the end of a line, *NIX only expects "\n", and hence when reading a line in from the file you are left with an extra "\r" at the end. Another solution would be to run the dos2unix command on the config file to remove the extra "\r" characters.