ファイル閲覧ツール less v290
Less is a program similar to more (1), but which allows
backward movement in the file as well as forward movement.
Also, less does not have to read the entire input file
before starting, so with large input files it starts up fas-
ter than text editors like vi (1). Less uses termcap (or
terminfo on some systems), so it can run on a variety of
terminals. There is even limited support for hardcopy ter-
minals. (On a hardcopy terminal, lines which should be
printed at the top of the screen are prefixed with a caret.)
Commands are based on both more and vi. Commands may be pre-
ceded by a decimal number, called N in the descriptions
below. The number is used by some commands, as indicated.