Run command in Perl

Running a command in Perl primarily involves executing system commands or invoking external programs.

Here are some examples of running a command in Perl:

1. Using the backtick (`) operator:

$result = ls -l;

print $result;



This command will execute the

ls -l command to list the files in the current directory and store the output in $result. Then it will print the output using the print

 statement.

2. Using the systemfunction:

system("ls -l");



This command will execute the same

ls -l

 command to list the files in the current directory.

3. Using the execfunction:

exec("ls -l");



This command is similar to the

system

 function, but it does not return to the calling program and replaces the current process with the executed command.

4. Using the qxfunction:

$output = qx(ls -l);

print $output;



This command will execute the

ls -l command and store the output in $output. Then it will print the output using the print` statement.

Note that running external commands in Perl can be a security risk, so it is best to validate and sanitize any user input.

See this concept in other languages