#Bash 的 setterm 命令

SETTERM(1)                       User Commands                      SETTERM(1)

NAME
       setterm - set terminal attributes

SYNOPSIS
       setterm [options]

DESCRIPTION
       setterm writes to standard output a character string that will invoke
       the specified terminal capabilities. Where possible terminfo is
       consulted to find the string to use. Some options however (marked
       "virtual consoles only" below) do not correspond to a terminfo(5)
       capability. In this case, if the terminal type is "con" or "linux" the
       string that invokes the specified capabilities on the PC Minix virtual
       console driver is output. Options that are not implemented by the
       terminal are ignored.

OPTIONS
       For boolean options (on or off), the default is on.

       Below, an 8-color can be black, red, green, yellow, blue, magenta,
       cyan, or white.

       A 16-color can be an 8-color, or grey, or bright followed by red,
       green, yellow, blue, magenta, cyan, or white.

       The various color options may be set independently, at least on virtual
       consoles, though the results of setting multiple modes (for example,
       --underline and --half-bright) are hardware-dependent.

       The optional arguments are recommended with '=' (equals sign) and not
       space between the option and the argument. For example
       --option=argument. setterm can interpret the next non-option argument
       as an optional argument too.

       --appcursorkeys on|off
           Sets Cursor Key Application Mode on or off. When on, ESC O A, ESC O
           B, etc. will be sent for the cursor keys instead of ESC [ A, ESC [
           B, etc. See the vi and Cursor-Keys section of the
           Text-Terminal-HOWTO for how this can cause problems for vi users.
           Virtual consoles only.

       --append console_number
           Like --dump, but appends to the snapshot file instead of
           overwriting it. Only works if no --dump options are given.

       --background 8-color|default
           Sets the background text color.

       --blank[=0-60|force|poke]
           Sets the interval of inactivity, in minutes, after which the screen
           will be automatically blanked (using APM if available). Without an
           argument, it gets the blank status (returns which vt was blanked,
           or zero for an unblanked vt). Virtual consoles only.

           The force argument keeps the screen blank even if a key is pressed.

           The poke argument unblanks the screen.

       --bfreq[=number]
           Sets the bell frequency in Hertz. Without an argument, it defaults
           to 0. Virtual consoles only.

       --blength[=0-2000]
           Sets the bell duration in milliseconds. Without an argument, it
           defaults to 0. Virtual consoles only.

       --blink on|off
           Turns blink mode on or off. Except on a virtual console, --blink
           off turns off all attributes (bold, half-brightness, blink,
           reverse).

       --bold on|off
           urns bold (extra bright) mode on or off. Except on a virtual
           console, --bold off turns off all attributes (bold,
           half-brightness, blink, reverse).

       --clear[=all|rest]
           Without an argument or with the argument all, the entire screen is
           cleared and the cursor is set to the home position, just like
           clear(1) does. With the argument rest, the screen is cleared from
           the current cursor position to the end.

       --clrtabs[=tab1 tab2 tab3 ...]
           Clears tab stops from the given horizontal cursor positions, in the
           range 1-160. Without arguments, it clears all tab stops. Virtual
           consoles only.

       --cursor on|off
           Turns the terminal’s cursor on or off.

       --default
           Sets the terminal’s rendering options to the default values.

       --dump[=console_number]
           Writes a snapshot of the virtual console with the given number to
           the file specified with the --file option, overwriting its
           contents; the default is screen.dump. Without an argument, it dumps
           the current virtual console. This overrides --append.

       --file filename
           Sets the snapshot file name for any --dump or --append options on
           the same command line. If this option is not present, the default
           is screen.dump in the current directory. A path name that exceeds
           the system maximum will be truncated, see PATH_MAX from
           linux/limits.h for the value.

       --foreground 8-color|default
           Sets the foreground text color.

       --half-bright on|off
           Turns dim (half-brightness) mode on or off. Except on a virtual
           console, --half-bright off turns off all attributes (bold,
           half-brightness, blink, reverse).

       --hbcolor 16-color
           Sets the color for half-bright characters.

       --initialize
           Displays the terminal initialization string, which typically sets
           the terminal’s rendering options, and other attributes to the
           default values.

       --inversescreen on|off
           Swaps foreground and background colors for the whole screen.

       --linewrap on|off
           Makes the terminal continue on a new line when a line is full.

       --msg on|off
           Enables or disables the sending of kernel printk() messages to the
           console. Virtual consoles only.

       --msglevel 0-8
           Sets the console logging level for kernel printk() messages. All
           messages strictly more important than this will be printed, so a
           logging level of 0 has the same effect as --msg on and a logging
           level of 8 will print all kernel messages. klogd(8) may be a more
           convenient interface to the logging of kernel messages.

           Virtual consoles only.

       --powerdown[=0-60]
           Sets the VESA powerdown interval in minutes. Without an argument,
           it defaults to 0 (disable powerdown). If the console is blanked or
           the monitor is in suspend mode, then the monitor will go into vsync
           suspend mode or powerdown mode respectively after this period of
           time has elapsed.

       --powersave mode
           Valid values for mode are:

           vsync|on
               Puts the monitor into VESA vsync suspend mode.

           hsync
               Puts the monitor into VESA hsync suspend mode.

           powerdown
               Puts the monitor into VESA powerdown mode.

           off
               Turns monitor VESA powersaving features.

       --regtabs[=1-160]
           Clears all tab stops, then sets a regular tab stop pattern, with
           one tab every specified number of positions. Without an argument,
           it defaults to 8. Virtual consoles only.

       --repeat on|off
           Turns keyboard repeat on or off. Virtual consoles only.

       --reset
           Displays the terminal reset string, which typically resets the
           terminal to its power-on state.

       --resize
           Reset terminal size by assessing maximum row and column. This is
           useful when actual geometry and kernel terminal driver are not in
           sync. Most notable use case is with serial consoles, that do not
           use ioctl(2) but just byte streams and breaks.

       --reverse on|off
           Turns reverse video mode on or off. Except on a virtual console,
           --reverse off turns off all attributes (bold, half-brightness,
           blink, reverse).

       --store
           Stores the terminal’s current rendering options (foreground and
           background colors) as the values to be used at reset-to-default.
           Virtual consoles only.

       --tabs[=tab1 tab2 tab3 ...]
           Sets tab stops at the given horizontal cursor positions, in the
           range 1-160. Without arguments, it shows the current tab stop
           settings.

       --term terminal_name
           Overrides the TERM environment variable.

       --ulcolor 16-color
           Sets the color for underlined characters. Virtual consoles only.

       --underline on|off
           Turns underline mode on or off.

       -h, --help
           Display help text and exit.

       -V, --version
           Print version and exit.

COMPATIBILITY
       Since version 2.25 setterm has support for long options with two
       hyphens, for example --help, beside the historical long options with a
       single hyphen, for example -help. In scripts it is better to use the
       backward-compatible single hyphen rather than the double hyphen.
       Currently there are no plans nor good reasons to discontinue
       single-hyphen compatibility.

BUGS
       Differences between the Minix and Linux versions are not documented.

SEE ALSO
       stty(1), tput(1), tty(4), terminfo(5)

REPORTING BUGS
       For bug reports, use the issue tracker at
       https://github.com/util-linux/util-linux/issues.

AVAILABILITY
       The setterm command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.39.3                 2023-11-21                        SETTERM(1)