perl function exec

The exec function in Perl is used to replace the current running process with a new process. Here is an example:

exec('ls', '-l');

In this example, the exec function is used to execute the ls command with the -l option. When this code is executed, the current running Perl process is replaced by a new process running the ls command with the -l option. The output of the ls -l command will be displayed in the console.

It's important to note that exec replaces the current process, so any code after the exec statement will not be executed. If you want to execute a command and continue running the Perl program, you can use the system function instead.

Also, it's important to validate any input arguments that will be passed to exec, as it can be a security risk to pass unvalidated user input to the shell command.