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

The video tutorial explains the true and false commands in Unix-like systems. The true command returns an exit code of 0, indicating success, while the false command returns an exit code of 1, indicating failure. The tutorial demonstrates these commands and their exit codes. It also covers practical uses, such as using the true command in loops to create infinite loops that can be stopped with control C. Additionally, it shows how to pipe the output of a failing command to the true command to ensure a zero exit code.

What exit code does the true command generate?

• 2

• 1

• 0

• 3

What is the exit code generated by the false command?

• 3

• 2

• 1

• 0

What is a common use of the 'while true' command?

• To sort a list

• To run a loop indefinitely

• To terminate a process

• To generate random numbers

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

• By using the false command

• By piping its output to the true command

• By restarting the command

• By using a try-catch block

What happens to the exit code when a non-existent file is piped to the true command?

• It becomes 2

• It remains 1

• It changes to 0

• It is undefined