src/usr.bin/less/less.1 - diff

Return to less.1 CVS log

Up to [local] / src / usr.bin / less

Diff for /src/usr.bin/less/less.1 between version 1.36 and 1.37

version 1.36, 2014/05/01 18:59:15

version 1.37, 2014/05/08 06:24:14

Line 52

.Nm

is a program similar to the traditional

.Xr more 1 ,

but which allows backward movement in the file as well as forward movement.

but with many more features.

Also,

It displays text one screenful at a time.

After showing each screenful, it prompts the user for a command.

When showing the last line of a file,

.Nm

does not have to read the entire input file before starting,

displays a prompt indicating end of file and the name of the next file

so with large input files it starts up faster than text editors like

to examine, if any.

.Xr vi 1 .

It then waits for input from the user.

.Nm

uses termcap (or terminfo on some systems),

so it can run on a variety of terminals.

There is even limited support for hardcopy terminals.

(On a hardcopy terminal, lines which should be printed at the top

of the screen are prefixed with a caret.)

.Pp

This version of

.Nm

also acts as

.Xr more 1

if it is called as

.Nm more .

.Nm more ,

In this mode, the differences are in the prompt and that

or if the

.Nm more

.Ev LESS_IS_MORE

exits by default when it gets to the end of the file.

environment variable is set.

The main differences between the two are summarized in the

.Sx COMPATIBILITY WITH MORE

section, below.

.Pp

Commands are based on both traditional

.Nm more

.Xr more 1

and

.Xr vi 1 .

Commands may be preceded by a decimal number,

Line 1700

behaves (mostly) in conformance with the POSIX "more" command specification.

In this mode, less behaves differently in these ways:

.Pp

The -e option works differently.

The

If the -e option is not set,

.Fl e

.Nm

option works differently:

behaves as if the -E option were set.

it causes

If the -e option is set,

.Xr more 1

.Nm

to exit the first time it reaches EOF,

behaves as if the -e and -F options were set.

not the second.

.Pp

The -m option works differently.

The

If the -m option is not set, the medium prompt is used.

.Fl m

If the -m option is set, the short prompt is used.

option works differently:

if it is not specified, the medium prompt is used;

if it is specified, the short prompt is used.

.Pp

The -n option acts like the -z option.

The

The normal behavior of the -n option is unavailable in this mode.

.Fl n

option acts like the

.Fl z

option.

The normal behavior of the

.Fl n

option is unavailable in this mode.

.Pp

The parameter to the -p option is taken to be a

The parameter to the

.Nm

.Fl p

option is taken to be a

command rather than a search pattern.

.Pp

The

Line 1850

Line 1859

The name of the editor (used for the v command).

.El

.Sh SEE ALSO

.Xr lesskey 1

.Xr lesskey 1 ,

.Xr more 1

.Sh AUTHORS

.An Mark Nudelman

.Pp