Is this limited to *NIX? FWIW, you can merge your system calls into one: 

for my $sd (@dirs) {
   system(qq{cd "$sd" && gunzip *.gz});
}

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Personally, I would add a check for system's return value and redirect gunzips output. For more robustness it might be better (slightly slower) to first scan for all *.gz files below @dirs and then decompress each file individually. That would allow to check the success of the decompression operation for each individual file - if that matters.

In reply to Re: Traversing SubDir and Execute Unix Command by Perlbotics
in thread Traversing SubDir and Execute Unix Command by neversaint

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