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Name

stty - set the options for a terminal

Synopsis

/usr/ucb/stty [ -a ] [ -g ] [ -h ] [ modes ]

Availability

SUNWscpu

Description

stty sets certain terminal I/O options for the device that is the current standard output; without arguments, it reports the settings of certain options.

Options

In this report, if a character is preceded by a caret (^), then the value of that option is the corresponding CTRL character (for example, ‘‘^h’’ is CTRL-H ; in this case, recall that CTRL-H is the same as the ‘‘back-space’’ key.) The sequence ‘‘^´’’ means that an option has a null value.

-a
Report all of the option settings.
-g
Report current settings in a form that can be used as an argument to another stty command.
-h
Report all the option settings with the control characters in an easy to read column format.

Options in the last group are implemented using options in the previous groups. Note: Many combinations of options make no sense, but no sanity checking is performed. Hardware flow control and clock modes options may not be supported by all hardware interfaces. The options are selected from the following:

Special Requests

all
Reports the same option settings as stty without arguments, but with the control characters in column format.
everything
Everything stty knows about is printed. Same as -h option.
speed
The terminal speed alone is reported on the standard output.
size
The terminal (window) sizes are printed on the standard output, first rows and then columns. This option is only appropriate if currently running a window system.
size
and speed always report on the settings of /dev/tty, and always report the settings to the standard output.

Control Modes

parenb (-parenb)
Enable (disable) parity generation and detection.
parext (-parext)
Enable (disable) extended parity generation and detection for mark and space parity.
parodd (-parodd)
Select odd (even) parity, or mark (space) parity if parext is enabled.
cs5 cs6 cs7 cs8
Select character size (see termio(7I) ).
  • Hang up line immediately.
    • 110 300 600 1200 1800 2400 4800 9600 19200 exta 38400 extb
    Set terminal baud rate to the number given, if possible. (All speeds are not supported by all hardware interfaces.)
    ispeed 0 110 300 600 1200 1800 2400 4800 9600 19200 exta 38400 extb
    Set terminal input baud rate to the number given, if possible. (Not all hardware supports split baud rates.) If the input baud rate is set to zero, the input baud rate will be specified by the value of the output baud rate.
    ospeed 0 110 300 600 1200 1800 2400 4800 9600 19200 exta 38400 extb
    Set terminal output baud rate to the number given, if possible. (Not all hardware supports split baud rates.) If the baud rate is set to zero, the line will be hung up immediately.
    hupcl (-hupcl)
    Hang up (do not hang up) connection on last close.
    hup (-hup)
    Same as hupcl (-hupcl).
    cstopb (-cstopb)
    Use two (one) stop bits per character.
    cread (-cread)
    Enable (disable) the receiver.
    clocal (-clocal)
    Assume a line without (with) modem control.
    crtscts (-crtscts)
    Enable hardware flow control. Raise the RTS (Request to Send) modem control line. Suspends output until the CTS (Clear to Send) line is raised.
    loblk (-loblk)
    Block (do not block) output from a non-current layer.

    Input Modes

    ignbrk (-ignbrk)
    Ignore (do not ignore) break on input.
    brkint (-brkint)
    Signal (do not signal) INTR on break.
    ignpar (-ignpar)
    Ignore (do not ignore) parity errors.
    parmrk (-parmrk)
    Mark (do not mark) parity errors (see termio(7I) ).
    inpck (-inpck)
    Enable (disable) input parity checking.
    istrip (-istrip)
    Strip (do not strip) input characters to seven bits.
    inlcr (-inlcr)
    Map (do not map) NL to CR on input.
    igncr (-igncr)
    Ignore (do not ignore) CR on input.
    icrnl (-icrnl)
    Map (do not map) CR to NL on input.
    iuclc (-iuclc)
    Map (do not map) upper-case alphabetics to lower case on input.
    ixon (-ixon)
    Enable (disable) START /STOP output control. Output is stopped by sending an STOP and started by sending an START .
    ixany (-ixany)
    Allow any character (only START ) to restart output.
    decctlq (-decctlq)
    Same as -ixany.
    ixoff (-ixoff)
    Request that the system send (not send) START/STOP characters when the input queue is nearly empty/full.
    tandem (-tandem)
    Same as ixoff.
    imaxbel (-imaxbel)
    Echo (do not echo) BEL when the input line is too long.
    iexten (-iexten)
    Enable (disable) extended (implementation-defined) functions for input data.

    Output Modes

    opost (-opost)
    Post-process output (do not post-process output; ignore all other output modes).
    olcuc (-olcuc)
    Map (do not map) lower-case alphabetics to upper case on output.
    onlcr (-onlcr)
    Map (do not map) NL to CR-NL on output.
    ocrnl (-ocrnl)
    Map (do not map) CR to NL on output.
    onocr (-onocr)
    Do not (do) output CR s at column zero.
    onlret (-onlret)
    On the terminal NL performs (does not perform) the CR function.
    ofill (-ofill)
    Use fill characters (use timing) for delays.
    ofdel (-ofdel)
    Fill characters are DEL s (NUL s).
    cr0 cr1 cr2 cr3
    Select style of delay for carriage returns (see termio(7I) ).
    nl0 nl1
    Select style of delay for line-feeds (see termio(7I) ).
    tab0 tab1 tab2 tab3
    Select style of delay for horizontal tabs (see termio(7I) ).
    bs0 bs1
    Select style of delay for backspaces (see termio(7I) ).
    ff0 ff1
    Select style of delay for form-feeds (see termio(7I) ).
    vt0 vt1
    Select style of delay for vertical tabs (see termio(7I) ).

    Local Modes

    isig (-isig)
    Enable (disable) the checking of characters against the special control characters INTR , QUIT , and SWTCH .
    icanon (-icanon)
    Enable (disable) canonical input (ERASE and KILL processing). Does not set MIN or TIME .
    cbreak (-cbreak)
    Equivalent to -icanon min 1 time 0.
    xcase (-xcase)
    Canonical (unprocessed) upper/lower-case presentation.
    echo (-echo)
    Echo back (do not echo back) every character typed.
    echoe (-echoe)
    Echo (do not echo) ERASE character as a backspace-space-backspace string. Note: This mode will erase the ERASE ed character on many CRT terminals; however, it does not keep track of column position and, as a result, may be confusing on escaped characters, tabs, and backspaces.
    crterase (-crterase)
    Same as echoe.
    echok (-echok)
    Echo (do not echo) NL after KILL character.
    lfkc (-lfkc)
    The same as echok (-echok); obsolete.
    echonl (-echonl)
    Echo (do not echo) NL .
    noflsh (-noflsh)
    Disable (enable) flush after INTR , QUIT , or SWTCH .
    stwrap (-stwrap)
    Disable (enable) truncation of lines longer than 79 characters on a synchronous line. (Does not apply to the 3B2.)
    tostop (-tostop)
    Send (do not send) SIGTTOU for background processes.
    echoctl (-echoctl)
    Echo (do not echo) control characters as ^char, delete as ^?
    ctlecho (-ctlecho)
    Same as echoctl.
    echoprt (-echoprt)
    Echo (do not echo) erase character as character is ‘‘erased’’.
    prterase (-prterase)
    Same as echoprt.
    echoke (-echoke)
    BS-SP-BS erase (do not BS-SP-BS erase) entire line on line kill.
    crtkill (-crtkill)
    Same as echoke.
    flusho (-flusho)
    Output is (is not) being flushed.
    pendin (-pendin)
    Retype (do not retype) pending input at next read or input character.
    stflush (-stflush)
    Enable (disable) flush on a synchronous line after every write(2) . (Does not apply to the 3B2.)
    stappl (-stappl)
    Use application mode (use line mode) on a synchronous line. (Does not apply to the 3B2.)

    Hardware Flow Control Modes

    rtsxoff (-rtsxoff)
    Enable (disable) RTS hardware flow control on input.
    ctsxon (-ctsxon)
    Enable (disable) CTS hardware flow control on output.
    dterxoff (-dterxoff)
    Enable (disable) DTER hardware flow control on input.
    rlsdxon (-rlsdxon)
    Enable (disable) RLSD hardware flow control on output.
    isxoff (-isxoff)
    Enable (disable) isochronous hardware flow control on input.

    Clock Modes

    xcibrg
    Get transmit clock from internal baud rate generator.
    xctset
    Get the transmit clock from transmitter signal element timing (DCE source) lead, CCITT V.24 circuit 114, EIA -232-D pin 15.
    xcrset
    Get transmit clock from receiver signal element timing (DCE source) lead, CCITT V.24 circuit 115, EIA -232-D pin 17.
    rcibrg
    Get receive clock from internal baud rate generator.
    rctset
    Get receive clock from transmitter signal element timing (DCE source) lead, CCITT V.24 circuit 114, EIA -232-D pin 15.
    rcrset
    Get receive clock from receiver signal element timing (DCE source) lead, CCITT V.24 circuit 115, EIA -232-D pin 17.
    tsetcoff
    Transmitter signal element timing clock not provided.
    tsetcrc
    Output receive clock on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA -232-D pin 24, clock source.
    tsetcxc
    Output transmit clock on transmitter signal element timing (DTE source) lead, CCITT V.24 circuit 113, EIA -232-D pin 24, clock source.
    rsetcoff
    Receiver signal element timing clock not provided.
    rsetcrc
    Output receive clock on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA -232-D pin, clock source.
    rsetcxc
    Output transmit clock on receiver signal element timing (DTE source) lead, CCITT V.24 circuit 128, no EIA -232-D pin, clock source.

    Control Assignments

    control-character c
    Set control-character to c, where control-character is intr, quit, erase, kill, eof, eol, eol2, swtch, start, stop, susp, dsusp, rprnt, flush, werase, lnext min, ctab, time, or brk) (ctab is used with -stappl; min and time are used with -icanon; see termio(7I) ). If c is preceded by an (escaped from the shell) caret (^), then the value used is the corresponding CTRL character (for example, ‘‘^d’’ is a CTRL-d ); ‘‘^?’’ is interpreted as DEL and ‘‘^-’’ is interpreted as undefined.
    line i
    Set line discipline to i (0 < i < 127 ).

    Combination Modes

    evenp or parity
    Enable parenb and cs7.
    -evenp, or -parity
    Disable parenb, and set cs8.
    even (-even)
    Same as evenp (-evenp).
    oddp
    Enable parenb, cs7, and parodd.
    -oddp
    Disable parenb and parodd, and set cs8.
    odd (-odd)
    Same as oddp (-oddp).
    spacep
    Enable parenb, cs7, and parext.
    -spacep
    Disable parenb and parext, and set cs8.
    markp
    Enable parenb, cs7, parodd, and parext.
    -markp
    Disable parenb, parodd, and parext, and set cs8.
    raw (-raw or cooked)
    Enable (disable) raw input and output (no ERASE , KILL , INTR , QUIT , SWTCH , EOT , or output post processing).
    nl (-nl)
    Unset (set) icrnl, onlcr. In addition -nl unsets inlcr, igncr, ocrnl, and onlret.
    lcase (-lcase)
    Set (unset) xcase, iuclc, and olcuc.
    LCASE (-LCASE)
    Same as lcase (-lcase).
    tabs (-tabs or tab3)
    Preserve (expand to spaces) tabs when printing.
    ek
    Reset ERASE and KILL characters back to normal # and @.
    sane
    Resets all modes to some reasonable values.
    term
    Set all modes suitable for the terminal type term, where term is one of tty33, tty37, vt05, tn300, ti700, or tek.
    async
    Set normal asynchronous communications where clock settings are xcibrg, rcibrg, tsetcoff and rsetcoff.
    litout (-litout)
    Disable (enable) parenb, istrip, and opost, and set cs8 (cs7).
    pass8 (-pass8)
    Disable (enable) parenb and istrip, and set cs8 (cs7).
    crt
    Set options for a CRT (echoe, echoctl, and, if >= 1200 baud, echoke.)
    dec
    Set all modes suitable for Digital Equipment Corp. operating systems users ERASE , KILL , and INTR characters to ^?, ^U, and ^C, decctlq, and crt.)

    Window Size

    rowsn
    Set window size to n rows.
    columnsn
    Set window size to n columns.
    colsn
    An alias for columns n.
    ypixelsn
    Set vertical window size to n pixels.
    xpixelsn
    Set horizontal window size to n pixels.

    See Also

    tabs(1) , ioctl(2) , termio(7I) , termiox(7I)

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