Linux Tip: How to use the history command

This video tutorial provides a concise overview of the Bash History Command in Linux. It explains how to view your command history, determine the size of your history buffer, and filter recent commands using the tail command. The tutorial also covers methods for reusing commands, such as using the UP Arrow key, typing the first few letters, or using an exclamation point followed by the command number. Additionally, it demonstrates how to modify and rerun previous commands.

What is the primary function of the Bash History Command?

• To create new command aliases

• To delete old commands

• To show and reuse recently used commands

• To encrypt command history

How can you determine the size of your history buffer?

• By typing 'history size'

• By typing 'history buffer'

• By typing 'echo hisst size'

• By typing 'buffer size'

Which command can be used to view only the last few commands from your history?

• history | grep

• history | head

• history | tail

• history | sort

What is one way to quickly reuse a command from your history?

• Press the DOWN Arrow key

• Type the entire command again

• Press the UP Arrow key

• Use the LEFT Arrow key

How can you rerun a command by using its number in the history buffer?

• Type the command number directly

• Use an exclamation point followed by the command number

• Use a question mark followed by the command number

• Type 'run' followed by the command number