Dear Masters,
I have the following subdirectories:

-dir1
  |_ file1.gz
  |_ ...
  |_ file1000.gz

...

-dir100
  |_file1.gz
  |_ ...
  |_ file300.gz
[download]

What I am trying to do is to traverse "dir*" and execute "gunzip" command on the files inside them. I tried this code, but doesn't work:

for my $sd (@dirs) {
   system("cd $sd");
   system("gunzip *.gz"); 
}
[download]

Please advice what's wrong with the above construct?