The less command is used in Unix-like operating systems to view the contents of a file one screen at a time. It allows users to scroll through the file, search for text, and navigate easily without loading the entire file into memory. This is particularly useful for viewing large files. You can open a file with less by using the command:
less filename.txt
While viewing a file in less, you can use the following keys for navigation:
Spaceorf: Move forward one screenb: Move backward one screenArrow keys: Scroll line by line/: Search for a stringq: Quit the viewer
