less

Scroll through large files interactively

less opens a file in a pager. Scroll with arrow keys. Press / to search, n for next match, q to quit. Always use less for log files over a few hundred lines.

Example

$ less /var/log/syslog
(interactive pager: q to quit, / to search)

Tip: Type it yourself in the terminal below - reading is not the same as doing.