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C:\usr\local\share\PassThru\perl>"C:\Program Files\Mozilla Firefox\fir
+efox.exe" --version

...

C:\usr\local\share\PassThru\perl>type out.txt
Mozilla Firefox 61.0.2

C:\usr\local\share\PassThru\perl>perl -Mwarnings -Mstrict -e "my $cmd 
+= q|C:\Program Files\Mozilla Firefox\firefox.exe|; open my $fh, '-|',
+ $cmd, '--version' or die $!; my $out = do { local $/; <$fh> }; close
+ $fh or die $! ? $! : qq(\$?=$?); print $out"
Mozilla Firefox 61.0.2