How to use the true and false commands: 2-Minute Linux Tips

The video tutorial explains the true and false commands, which generate exit codes of 0 and 1, respectively. It demonstrates how these commands work and their typical uses, such as in loops and ensuring a zero exit code for failing commands. The tutorial provides examples of running these commands and discusses their practical applications in scripting.

What exit code does the true command generate?

• 3

• 0

• 2

• 1

What is the exit code generated by the false command?

• 2

• 3

• 1

• 0

How can you create a loop that runs indefinitely?

• Using while false

• Using until loop

• Using while true

• Using for loop

What key combination is used to stop a while true loop?

• Ctrl + C

• Ctrl + X

• Ctrl + Z

• Ctrl + V

How can you ensure a command that fails returns an exit code of 0?

• By using the false command

• By using an if-else statement

• By piping its output to the true command

• By using a try-catch block