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You want to delete a directory named 'temp_backup' that contains several files. Which command will successfully remove it and its contents?
`rm -r temp_backup` recursively removes the directory and all its contents, which is required because `rm` by default refuses to delete directories. The -r (recursive) flag descends into subdirectories and deletes files before removing the directory itself. This is the standard w…Read full explanation
To navigate from your current directory to your home directory regardless of your current location, which command is most efficient?
The 'cd ~' command navigates directly to the current user's home directory from any location. The tilde (~) is a shell expansion that represents the home directory path, making it the most efficient and location-independent way to return home. 'cd' alone also works, but 'cd ~' is…Read full explanation
Which of the following commands is used to create an empty file or update the timestamp of an existing file?
The `touch` command is specifically designed to create an empty file if it does not exist, or update the access and modification timestamps of an existing file to the current time. It does this by making a `utime()` system call, which sets the file's timestamps without altering i…Read full explanation
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