A slight change to the format of your input file would make your job a lot easier:

getStuff
configs
--force=all
--out out.txt
-v
-a

getOtherStuff
configs
--force=all
--out out2.txt
-v
-a

By separating each argument with a newline, you remove the need to write code to guess how the target program parses its arguments. You may now use <>'s paragraph mode to parse the arguments into an array:

$/ = "";
$" = ", ";
while (<FH>) {
  my @args = split /\n/, $_;
  print "args: @args\n";
}
[download]

prints:

args: getStuff, configs, --force=all, --out out.txt, -v, -a
args: getOtherStuff, configs, --force=all, --out out2.txt, -v