less is a program for paging through files or other output. It was written in reaction to the perceived primitiveness of more (hence its name) and allows backward as well as forward paging. Some commands may be preceded by a number.
Set number of lines to scroll to num. Default is one screenful. A negative num sets the number to num lines less than the current number.
Run command on startup. If command is a number, jump to that line. The option ++ applies this command to each file in the command-line list.
Print help screen.
When searching, begin after last line currently displayed. (Default is to search from second line displayed.)
Specify the amount of buffer space to use for each file in 1 KB units. (Default is to use 64 KB per file.)
Do not automatically allocate buffer space to hold all data read from a pipe. If -b is specified, allocate that amount of space, or default to 64 KB. If necessary, allow information from previous screens to be lost.
Redraw screen from top, not bottom.
Force opening of directories and devices; do not print warning when opening binaries.
Exit without displaying anything if first file can fit on a single screen.
Highlight only string found by past search command, not all matching strings.
Never highlight matching search ...