dash:tldr:54e0c

The command dash -n ${path-to-script-sh} is used to execute a script file using the dash shell with the -n option.

Here's a breakdown of the command:

• dash: It is the command to invoke the dash shell, which is a lightweight and POSIX-compliant shell.
• -n: This option tells the shell to read the script without executing it. It performs a syntax check to ensure there are no syntax errors in the script code.
• ${path-to-script-sh}: This is a placeholder for the actual path to the script file. You need to replace it with the path to the script file you want to execute.

When the command is executed, the dash shell reads the script at the specified path, checks its syntax for errors, and reports any issues it encounters. It does not actually execute the script code, making it useful for quickly checking the syntax validity of shell scripts.