How to run a shell script from a Perl program
1. Using system
system($command, @arguments);
For example:
system("sh", "script.sh", "--help" ); system("sh script.sh --help");
System will execute the $command with
@arguments and return to your script when finished. You may check $!
for certain errors passed to the OS by the external application. Read
the documentation for system for the nuances of how various
invocations are slightly different.2. Using
exec
This is very similar to the use of system, but it will
terminate your script upon execution. Again, read the documentation
for exec for more.3. Using backticks or
qx//
my $output = `script.sh --option`; my $output = qx/script.sh --option/;
The backtick operator and it’s equivalent
qx//
, excute the command and options inside the operator and return that commands output to STDOUT when it finishes.There are also ways to run external applications through creative use of open, but this is advanced use; read the documentation for more.