Linux Administration Bootcamp: Go from Beginner to Advanced - Re-running a Command Starting with a String

The video tutorial explains how to use the exclamation mark followed by a string to recall previous commands in a command-line interface. It demonstrates the technique with examples, such as checking disk usage and managing directories and file ownership. The tutorial emphasizes specifying enough of the string to make the command unique, especially when multiple commands start with the same letter.

What is the purpose of using an exclamation mark followed by a string in command line history?

• To save the current command

• To recall a previous command starting with the string

• To repeat the last command

• To delete the last command

If you have multiple commands starting with 'D' in your history, how can you specify the correct one?

• Use the full command name

• Add more characters to the string

• Use a different letter

• Type the command number

In the advanced example, what command is executed when only '!M' is used?

• Modify permissions

• Check disk usage

• Change ownership

• Make directory

What must be specified to run the 'chown' command in the advanced example?

• !C

• !Ch

• !Ccho

• !Chmod

Why might you need to specify more than one character when recalling a command?

• To delete the command from history

• To save the command for later use

• To avoid executing a different command with a similar start

• To ensure the command is executed faster