Run the command at startup (commands with permanent Mac and root permissions)

1. Start the program and execute commands

Write the command or Startup Program command to/etc/rc. Local.

Note: Only "commands that can be executed by logged-on users are allowed" can be executed in the file"

If Mac is permanently modified, write the following statement into/etc/rc. Local.

Ifconfig eth0 down

Ifconfig eth0 HW ether **:**:**:**:**:**

Ifconfig eth0 up

2,Start the script

(1) run the script in/etc/rc. Local.

(2) Add the soft link of the script to the corresponding runlevel (not tested yet)

3. How can I solve the problem that a common user after logging on has the right to execute commands only after executing the root command?

Idea 1:/etc/passwd to change the default shell of this common user to bash

The test is not feasible and only solves the problem of normal user input prompt.

Train of Thought 2: compile as a module? Not tested

Idea 3: Change the UID of a common user to 0 in/etc/passwd, and grant the root permission to the common user (the security is not high !)