Ctrl+R: Recall the last command matching the characters you provide. Press this shortcut and start typing to search your bash history for a command.

What is the use of Ctrl R?

Alternatively referred to as Control+R and C-r, Ctrl+R is a keyboard shortcut most often used to refresh the page in an Internet browser.

What does R do in Linux?

5 Answers. The character ‘r’ is carriage return. It returns the cursor to the start of the line. It is often used in Internet protocols conjunction with newline ( ‘n’ ) to mark the end of a line (most standards specifies it as “rn” , but some allows the wrong way around).