TPUT(1) User Commands TPUT(1)
NAME
tput - initialize a terminal or query terminfo database
SYNOPSIS
tput [
-T type]
capname [
parm]...
tput -S <<
DESCRIPTION
The
tput utility uses the
terminfo database to make the values of
terminal-dependent capabilities and information available to the shell
(see
sh(1)); to clear, initialize or reset the terminal; or to return the
long name of the requested terminal type.
tput outputs a string if the
capability attribute (
capname) is of type string, or an integer if the
attribute is of type integer. If the attribute is of type boolean,
tput simply sets the exit status (
0 for
TRUE if the terminal has the
capability,
1 for
FALSE if it does not), and produces no output. Before
using a value returned on standard output, the user should test the exit
status (
$?, see
sh(1)) to be sure it is
0. See the EXIT STATUS section.
OPTIONS
The following options are supported:
-Ttype Indicates the
type of terminal. Normally this option is
unnecessary, because the default is taken from the environment
variable
TERM. If
-T is specified, then the shell variables
LINES and
COLUMNS and the layer size will not be referenced.
-S Allows more than one capability per invocation of
tput. The
capabilities must be passed to
tput from the standard input
instead of from the command line (see the example in the
EXAMPLES section). Only one
capname is allowed per line. The
-S option changes the meaning of the
0 and
1 boolean and
string exit statuses (see the EXAMPLES section).
OPERANDS
The following operands are supported:
capname Indicates the capability attribute from the
terminfo database. See
terminfo(5) for a complete list of capabilities
and the
capname associated with each.
The following strings will be supported as operands by the
implementation in the "C" locale:
clear Display the clear-screen sequence.
init If the
terminfo database is present and an entry
for the user's terminal exists (see
-Ttype,
above), the following will occur:
1. if present, the terminal's
initialization strings will be output
(
is1,
is2,
is3,
if,
iprog),
2. any delays (for instance, newline)
specified in the entry will be set in
the tty driver,
3. tabs expansion will be turned on or
off according to the specification in
the entry, and
4. if tabs are not expanded, standard
tabs will be set (every 8 spaces). If
an entry does not contain the
information needed for any of the
four above activities, that activity
will silently be skipped.
reset Instead of putting out initialization strings,
the terminal's reset strings will be output if
present (
rs1,
rs2,
rs3,
rf). If the reset
strings are not present, but initialization
strings are, the initialization strings will be
output. Otherwise,
reset acts identically to
init.
longname If the
terminfo database is present and an entry
for the user's terminal exists (see
-Ttype above), then the long name of the terminal will
be put out. The long name is the last name in
the first line of the terminal's description in
the
terminfo database (see
term(7)).
parm If the attribute is a string that takes parameters, the
argument
parm will be instantiated into the string. An all
numeric argument will be passed to the attribute as a number.
EXAMPLES
Example 1: Initializing the terminal according to TERM
This example initializes the terminal according to the type of terminal
in the environment variable
TERM. This command should be included in
everyone's .profile after the environment variable
TERM has been
exported, as illustrated on the
profile(5) manual page.
example%
tput init Example 2: Resetting a terminal
This example resets an AT&T 5620 terminal, overriding the type of
terminal in the environment variable
TERM:
example%
tput -T5620 reset Example 3: Moving the cursor
The following example sends the sequence to move the cursor to row
0,
column
0 (the upper left corner of the screen, usually known as the
"home" cursor position).
example%
tput cup 0 0 This next example sends the sequence to move the cursor to row
23, column
4.
example%
tput cup 23 4 Example 4: Echoing the clear-screen sequence
This example echos the clear-screen sequence for the current terminal.
example%
tput clear Example 5: Printing the number of columns
This command prints the number of columns for the current terminal.
example%
tput cols The following command prints the number of columns for the 450 terminal.
example%
tput -T450 cols Example 6: Setting shell variables
This example sets the shell variables
bold, to begin stand-out mode
sequence, and
offbold, to end standout mode sequence, for the current
terminal. This might be followed by a prompt:
echo "${bold}Please type in your name: ${offbold}\c" example%
bold='tput smso' example%
offbold='tput rmso' Example 7: Setting the exit status
This example sets the exit status to indicate if the current terminal is
a hardcopy terminal.
example%
tput hc Example 8: Printing the long name from terminfo
This command prints the long name from the
terminfo database for the type
of terminal specified in the environment variable
TERM.
example%
tput longname Example 9: Processing several capabilities with one invocation
This example shows
tput processing several capabilities in one
invocation. This example clears the screen, moves the cursor to position
10,
10 and turns on
bold (extra bright) mode. The list is terminated by
an exclamation mark (
!) on a line by itself.
example%
tput -S <<! > clear > cup 10 10 > bold > !ENVIRONMENT VARIABLES
See
environ(7) for descriptions of the following environment variables
that affect the execution of
tput:
LANG,
LC_ALL,
LC_CTYPE,
LC_MESSAGES,
and
NLSPATH.
TERM Determine the terminal type. If this variable is unset or null,
and if the
-T option is not specified, an unspecified default
terminal type will be used.
EXIT STATUS
The following exit values are returned:
0 o If
capname is of type boolean and
-S is not
specified, indicates
TRUE.
o If
capname is of type string and
-S is not
specified, indicates
capname is defined for this
terminal type.
o If
capname is of type boolean or string and
-S is
specified, indicates that all lines were successful.
o
capname is of type integer.
o The requested string was written successfully.
1 o If
capname is of type boolean and
-S is not
specified, indicates
FALSE.
o If
capname is of type string and
-S is not
specified, indicates that
capname is not defined for
this terminal type.
2 Usage error.
3 No information is available about the specified terminal type.
4 The specified operand is invalid.
>4 An error occurred.
-1 capname is a numeric variable that is not specified in the
terminfo database. For instance,
tput -T450 lines and
tput -T2621 xmc.
FILES
/usr/include/curses.h curses(3CURSES) header
/usr/include/term.h terminfo header
/usr/lib/tabset/* Tab settings for some terminals, in a format appropriate to be output
to the terminal (escape sequences that set margins and tabs). For
more information, see the "Tabs and Initialization" section of
terminfo(5) /usr/share/lib/terminfo/?/* compiled terminal description database
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+
SEE ALSO
clear(1),
sh(1),
stty(1),
tabs(1),
curses(3CURSES),
profile(5),
terminfo(5),
attributes(7),
environ(7),
standards(7),
term(7) February 1, 1995
TPUT(1)