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diff --git a/upstream/debian-unstable/man1/tset.1 b/upstream/debian-unstable/man1/tset.1 new file mode 100644 index 00000000..70c4ae0b --- /dev/null +++ b/upstream/debian-unstable/man1/tset.1 @@ -0,0 +1,462 @@ +.\"*************************************************************************** +.\" Copyright 2018-2022,2023 Thomas E. Dickey * +.\" Copyright 1998-2016,2017 Free Software Foundation, Inc. * +.\" * +.\" Permission is hereby granted, free of charge, to any person obtaining a * +.\" copy of this software and associated documentation files (the * +.\" "Software"), to deal in the Software without restriction, including * +.\" without limitation the rights to use, copy, modify, merge, publish, * +.\" distribute, distribute with modifications, sublicense, and/or sell * +.\" copies of the Software, and to permit persons to whom the Software is * +.\" furnished to do so, subject to the following conditions: * +.\" * +.\" The above copyright notice and this permission notice shall be included * +.\" in all copies or substantial portions of the Software. * +.\" * +.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * +.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * +.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * +.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * +.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * +.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * +.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. * +.\" * +.\" Except as contained in this notice, the name(s) of the above copyright * +.\" holders shall not be used in advertising or otherwise to promote the * +.\" sale, use or other dealings in this Software without prior written * +.\" authorization. * +.\"*************************************************************************** +.\" +.\" $Id: tset.1,v 1.79 2023/12/23 16:20:07 tom Exp $ +.TH tset 1 2023-12-23 "ncurses 6.4" "User commands" +.ie \n(.g \{\ +.ds `` \(lq +.ds '' \(rq +.ds ^ \(ha +.\} +.el \{\ +.ie t .ds `` `` +.el .ds `` "" +.ie t .ds '' '' +.el .ds '' "" +.ds ^ ^ +.\} +. +.de bP +.ie n .IP \(bu 4 +.el .IP \(bu 2 +.. +. +.ds d /etc/terminfo +.SH NAME +\fB\%tset\fP, +\fB\%reset\fP \- +initialize or reset terminal state +.SH SYNOPSIS +\fBtset\fP [\fB\-IQVcqrsw\fP] [\fB\-\fP] [\fB\-e\fP \fIch\fP] [\fB\-i\fP \fIch\fP] [\fB\-k\fP \fIch\fP] [\fB\-m\fP \fImapping\fP] [\fIterminal-type\fP] +.br +\fBreset\fP [\fB\-IQVcqrsw\fP] [\fB\-\fP] [\fB\-e\fP \fIch\fP] [\fB\-i\fP \fIch\fP] [\fB\-k\fP \fIch\fP] [\fB\-m\fP \fImapping\fP] [\fIterminal-type\fP] +.SH DESCRIPTION +.SS "\fItset\fP \(em initialization" +This program initializes terminals. +.PP +First, \fBtset\fP retrieves the current terminal mode settings +for your terminal. +It does this by successively testing +.bP +the standard error, +.bP +standard output, +.bP +standard input and +.bP +ultimately \*(``/dev/tty\*('' +.PP +to obtain terminal settings. +Having retrieved these settings, \fBtset\fP remembers which +file descriptor to use when updating settings. +.PP +Next, \fBtset\fP determines the type of terminal that you are using. +This determination is done as follows, using the first terminal type found. +.PP +1. The \fBterminal\fP argument specified on the command line. +.PP +2. The value of the \fITERM\fP environment variable. +.PP +3. (BSD systems only.) The terminal type associated with the standard +error output device in the \fI/etc/ttys\fP file. +(On System\ V hosts and systems using that convention, +\fI\%getty\fP(8) does this job by setting +\fITERM\fP according to the type passed to it by \fI\%/etc/inittab\fP.) +.PP +4. The default terminal type, \*(``unknown\*('', +is not suitable for curses applications. +.PP +If the terminal type was not specified on the command-line, the \fB\-m\fP +option mappings are then applied; +see subsection \*(``Terminal Type Mapping\*(''. +Then, if the terminal type begins with a question mark (\*(``?\*(''), the +user is prompted for confirmation of the terminal type. +An empty +response confirms the type, or, another type can be entered to specify +a new type. +Once the terminal type has been determined, +the terminal description for the terminal is retrieved. +If no terminal description is found +for the type, the user is prompted for another terminal type. +.PP +Once the terminal description is retrieved, +.bP +if the \*(``\fB\-w\fP\*('' option is enabled, \fBtset\fP may update +the terminal's window size. +.IP +If the window size cannot be obtained from the operating system, +but the terminal description +(or environment, +e.g., +\fILINES\fP and \fI\%COLUMNS\fP variables specify this), +use this to set the operating system's notion of the window size. +.bP +if the \*(``\fB\-c\fP\*('' option is enabled, +the backspace, interrupt and line kill characters +(among many other things) are set +.bP +unless the \*(``\fB\-I\fP\*('' option is enabled, +the terminal +and tab \fIinitialization\fP strings are sent to the standard error output, +and \fBtset\fP waits one second (in case a hardware reset was issued). +.bP +Finally, if the erase, interrupt and line kill characters have changed, +or are not set to their default values, their values are displayed to the +standard error output. +.SS "\fIreset\fP \(em reinitialization" +When invoked as \fBreset\fP, \fBtset\fP sets the terminal +modes to \*(``sane\*('' values: +.bP +sets cooked and echo modes, +.bP +turns off cbreak and raw modes, +.bP +turns on newline translation and +.bP +resets any unset special characters to their default values +.PP +before +doing the terminal initialization described above. +Also, rather than using the terminal \fIinitialization\fP strings, +it uses the terminal \fIreset\fP strings. +.PP +The \fBreset\fP command is useful +after a program dies leaving a terminal in an abnormal state: +.bP +you may have to type +.sp + \fI<LF>\fBreset\fI<LF>\fR +.sp +(the line-feed character is normally control-J) to get the terminal +to work, as carriage-return may no longer work in the abnormal state. +.bP +Also, the terminal will often not echo the command. +.SS "Setting the Environment" +It is often desirable to enter the terminal type and information about +the terminal's capabilities into the shell's environment. +This is done using the \fB\-s\fP option. +.PP +When the \fB\-s\fP option is specified, the commands to enter the information +into the shell's environment are written to the standard output. +If the \fISHELL\fP environment variable ends in \*(``csh\*('', +the commands +are for \fIcsh\fP(1), +otherwise, +they are for \fIsh\fP(1). +The \fIcsh\fP commands set and unset the shell variable \fBnoglob\fP, +leaving it unset. +The following line in the \fB.login\fP +or \fB.profile\fP files will initialize the environment correctly: +.sp + eval \(gatset \-s options ... \(ga +. +.SS "Terminal Type Mapping" +When the terminal is not hardwired into the system (or the current +system information is incorrect) the terminal type derived from the +\fI/etc/ttys\fP file or the \fITERM\fP environment variable is often +something generic like \fBnetwork\fP, \fBdialup\fP, or \fBunknown\fP. +When \fBtset\fP is used in a startup script it is often desirable to +provide information about the type of terminal used on such ports. +.PP +The \fB\-m\fP options maps +from some set of conditions to a terminal type, that is, to +tell \fBtset\fP +\*(``If I'm on this port at a particular speed, +guess that I'm on that kind of terminal\*(''. +.PP +The argument to the \fB\-m\fP option consists of an optional port type, an +optional operator, an optional baud rate specification, an optional +colon (\*(``:\*('') character and a terminal type. +The port type is a +string (delimited by either the operator or the colon character). +The operator may be any combination of +\*(``>\*('', +\*(``<\*('', +\*(``@\*('', +and \*(``!\*(''; +\*(``>\*('' means greater than, +\*(``<\*('' means less than, +\*(``@\*('' means equal to and +\*(``!\*('' inverts the sense of the test. +The baud rate is specified as a number and is compared with the speed +of the standard error output (which should be the control terminal). +The terminal type is a string. +.PP +If the terminal type is not specified on the command line, the \fB\-m\fP +mappings are applied to the terminal type. +If the port type and baud +rate match the mapping, the terminal type specified in the mapping +replaces the current type. +If more than one mapping is specified, the +first applicable mapping is used. +.PP +For example, consider the following mapping: \fBdialup>9600:vt100\fP. +The port type is dialup , the operator is >, the baud rate +specification is 9600, and the terminal type is vt100. +The result of +this mapping is to specify that if the terminal type is \fBdialup\fP, +and the baud rate is greater than 9600 baud, a terminal type of +\fBvt100\fP will be used. +.PP +If no baud rate is specified, the terminal type will match any baud rate. +If no port type is specified, the terminal type will match any port type. +For example, \fB\-m dialup:vt100 \-m :?xterm\fP +will cause any dialup port, regardless of baud rate, to match the terminal +type vt100, and any non-dialup port type to match the terminal type ?xterm. +Note, because of the leading question mark, the user will be +queried on a default port as to whether they are actually using an xterm +terminal. +.PP +No whitespace characters are permitted in the \fB\-m\fP option argument. +Also, to avoid problems with meta-characters, it is suggested that the +entire \fB\-m\fP option argument be placed within single quote characters, +and that \fIcsh\fP users insert a backslash character (\*(``\e\*('') +before any exclamation marks (\*(``!\*(''). +.SH OPTIONS +The options are as follows: +.TP 5 +.B \-c +Set control characters and modes. +.TP 5 +.BI \-e\ ch +Set the erase character to \fIch\fP. +.TP +.B \-I +Do not send the terminal or tab initialization strings to the terminal. +.TP +.BI \-i\ ch +Set the interrupt character to \fIch\fP. +.TP +.BI \-k\ ch +Set the line kill character to \fIch\fP. +.TP +.BI \-m\ mapping +Specify a mapping from a port type to a terminal; +see subsection \*(``Terminal Type Mapping\*(''. +.TP +.B \-Q +Do not display any values for the erase, interrupt and line kill characters. +Normally \fBtset\fP displays the values for control characters which +differ from the system's default values. +.TP +.B \-q +The terminal type is displayed to the standard output, and the terminal is +not initialized in any way. +The option \*(``\-\*('' by itself is equivalent but archaic. +.TP +.B \-r +Print the terminal type to the standard error output. +.TP +.B \-s +Print the sequence of shell commands to initialize the environment variable +\fITERM\fP to the standard output; +see subsection \*(``Setting the Environment\*(''. +.TP +.B \-V +reports the version of \fI\%ncurses\fP which was used in this program, +and exits. +.TP +.B \-w +Resize the window to match the size deduced via \fB\%setupterm\fP(3NCURSES). +Normally this has no effect, +unless \fBsetupterm\fP is not able to detect the window size. +.PP +The arguments for the \fB\-e\fP, \fB\-i\fP, and \fB\-k\fP +options may either be entered as actual characters +or by using the \*(``hat\*('' +notation, i.e., control-h may be specified as \*(``\*^H\*('' or \*(``\*^h\*(''. +.PP +If neither \fB\-c\fP or \fB\-w\fP is given, both options are assumed. +.SH ENVIRONMENT +The \fBtset\fP command uses these environment variables: +.TP 5 +.I SHELL +tells \fBtset\fP whether to initialize \fITERM\fP using \fIsh\fP(1) or +\fIcsh\fP(1) syntax. +.TP 5 +.I TERM +Denotes your terminal type. +Each terminal type is distinct, though many are similar. +.TP 5 +.I TERMCAP +may denote the location of a termcap database. +If it is not an absolute pathname, e.g., begins with a \*(``/\*('', +\fBtset\fP removes the variable from the environment before looking +for the terminal description. +.SH FILES +.TP +.I /etc/ttys +system port name to terminal type mapping database (BSD versions only). +.TP +.I \*d +compiled terminal description database directory +.SH PORTABILITY +Neither IEEE Std 1003.1/The Open Group Base Specifications Issue 7 +(POSIX.1-2008) nor +X/Open Curses Issue 7 documents \fBtset\fP or \fBreset\fP. +.PP +The AT&T \fBtput\fP utility (AIX, HP-UX, Solaris) +incorporated the terminal-mode manipulation as well as termcap-based features +such as resetting tabstops from \fBtset\fP in BSD (4.1c), +presumably with the intention of making \fBtset\fP obsolete. +However, each of those systems still provides \fBtset\fP. +In fact, the commonly-used \fBreset\fP utility +is always an alias for \fBtset\fP. +.PP +The \fB\%tset\fP utility provides backward compatibility with BSD +environments; +under most modern Unices, +\fI\%/etc/inittab\fP and \fI\%getty\fP(8) can set \fITERM\fP +appropriately for each dial-up line, +obviating what was \fB\%tset\fP's most important use. +This implementation behaves like 4.4BSD \fBtset\fP, +with a few exceptions we shall consider now. +.PP +A few options are different +because the \fI\%TERMCAP\fP variable +is no longer supported under terminfo-based \fI\%ncurses\fP: +.bP +The \fB\-S\fP option of BSD \fBtset\fP no longer works; +it prints an error message to the standard error and dies. +.bP +The \fB\-s\fP option only sets \fITERM\fP, +not \fI\%TERMCAP\fP. +.PP +There was an undocumented 4.4BSD feature +that invoking \fBtset\fP via a link named +\*(``TSET\*('' (or via any other name beginning with an upper-case letter) +set the terminal to use upper-case only. +This feature has been omitted. +.PP +The \fB\-A\fP, \fB\-E\fP, \fB\-h\fP, \fB\-u\fP and \fB\-v\fP +options were deleted from the \fBtset\fP +utility in 4.4BSD. +None of them were documented in 4.3BSD and all are +of limited utility at best. +The \fB\-a\fP, \fB\-d\fP, and \fB\-p\fP options are similarly +not documented or useful, but were retained as they appear to be in +widespread use. +It is strongly recommended that any usage of these +three options be changed to use the \fB\-m\fP option instead. +The \fB\-a\fP, \fB\-d\fP, and \fB\-p\fP options +are therefore omitted from the usage summary above. +.PP +Very old systems, e.g., 3BSD, used a different terminal driver which +was replaced in 4BSD in the early 1980s. +To accommodate these older systems, the 4BSD \fBtset\fP provided a +\fB\-n\fP option to specify that the new terminal driver should be used. +This implementation does not provide that choice. +.PP +It is still permissible to specify the \fB\-e\fP, \fB\-i\fP, +and \fB\-k\fP options without arguments, +although it is strongly recommended that such usage be fixed to +explicitly specify the character. +.PP +As of 4.4BSD, +executing \fBtset\fP as \fBreset\fP no longer implies the \fB\-Q\fP option. +Also, the interaction between the \- option and the \fIterminal\fP +argument in some historic implementations of \fBtset\fP has been removed. +.PP +The \fB\-c\fP and \fB\-w\fP options are not found in earlier implementations. +However, a different window size-change feature was provided in 4.4BSD. +.bP +In 4.4BSD, \fBtset\fP uses the window size from the termcap description +to set the window size if \fBtset\fP is not able to obtain the window +size from the operating system. +.bP +In \fI\%ncurses\fP, \fBtset\fP obtains the window size using +\fBsetupterm\fP, which may be from +the operating system, +the \fILINES\fP and \fICOLUMNS\fP environment variables or +the terminal description. +.PP +Obtaining the window size from the terminal description is common to +both implementations, but considered obsolescent. +Its only practical use is for hardware terminals. +Generally speaking, a window size would be unset only if there were +some problem obtaining the value from the operating system +(and \fBsetupterm\fP would still fail). +For that reason, +the \fILINES\fP and \fI\%COLUMNS\fP environment variables +may be useful for working around window-size problems. +Those have the drawback that if the window is resized, +those variables must be recomputed and reassigned. +To do this more easily, use the \fBresize\fP(1) program. +.SH HISTORY +A \fB\%reset\fP command written by Kurt Shoens appeared in 1BSD +(March 1978). +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=1BSD/s6/reset.c +It set the \fIerase\fP and \fIkill\fP characters +to \fB\*^H\fP (backspace) and \fB@\fP respectively. +Mark Horton improved this \fB\%reset\fP in 3BSD +(October 1979), +adding \fIintr\fP, +\fIquit\fP, +\fIstart\fP/\fIstop\fP, +and \fIeof\fP +characters as well as changing the program to avoid modifying any user +settings. +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=3BSD/usr/src/cmd/\ +.\" reset.c +That version of \fB\%reset\fP did not use \fI\%termcap\fP. +.PP +Eric Allman wrote a distinct \fBtset\fP command for 1BSD, +using a forerunner of \fI\%termcap\fP called \fI\%ttycap\fP. +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=1BSD/s6/tset.c +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=1BSD/man7/ttycap.7 +Allman's comments in the source code indicate +that he began work in October 1977, +continuing development over the next few years. +By late 1979, +it had migrated to \fI\%termcap\fP and handled the \fI\%TERMCAP\fP +variable. +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=3BSD/usr/src/cmd/\ +.\" tset/tset.c +Later comments indicate that \fBtset\fP was modified in September 1980 +to use logic copied from the 3BSD \*(``reset\*('' program when it was +invoked as \fB\%reset\fP. +.\" https://minnie.tuhs.org/cgi-bin/utree.pl?file=2.9BSD/usr/src/ucb/\ +.\" tset/tset.c +This version appeared in 4.1cBSD, \" and backported to 2.9BSD +late in 1982. +Other developers such as Keith Bostic and Jim Bloom continued to modify +\fBtset\fP until 4.4BSD was released in 1993. +.PP +The \fI\%ncurses\fP implementation was lightly adapted from the 4.4BSD +sources to use the \fI\%terminfo\fP API by Eric S.\& Raymond +<esr@snark.thyrsus.com>. +.SH SEE ALSO +\fB\%csh\fP(1), +\fB\%sh\fP(1), +\fB\%stty\fP(1), +\fB\%terminfo\fP(3NCURSES), +\fB\%tty\fP(4), +\fB\%terminfo\fP(5), +\fB\%ttys\fP(4), +\fB\%environ\fP(7) |