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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | DEFAULT SCHEME FILES FORMAT | ENVIRONMENT | FILES | EXAMPLE | COMPATIBILITY | REPORTING BUGS | AVAILABILITY |
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TERMINAL-COLORS.D(5) File formats TERMINAL-COLORS.D(5)
terminal-colors.d - configure output colorization for various
utilities
/etc/terminal-colors.d/[[name][@term].][type]
Files in this directory determine the default behavior for
utilities when coloring output.
The name is a utility name. The name is optional and when none is
specified then the file is used for all unspecified utilities.
The term is a terminal identifier (the TERM environment variable).
The terminal identifier is optional and when none is specified
then the file is used for all unspecified terminals.
The type is a file type. Supported file types are:
disable
Turns off output colorization for all compatible utilities.
See also the NO_COLOR environment variable below.
enable
Turns on output colorization; any matching disable files are
ignored.
scheme
Specifies colors used for output. The file format may be
specific to the utility, the default format is described
below.
If there are more files that match for a utility, then the file
with the more specific filename wins. For example, the filename
"@xterm.scheme" has less priority than "dmesg@xterm.scheme". The
lowest priority are those files without a utility name and
terminal identifier (e.g., "disable").
The user-specific $XDG_CONFIG_HOME/terminal-colors.d or
$HOME/.config/terminal-colors.d overrides the global setting.
The following statement is recognized:
name color-sequence
The name is a logical name for the color sequence (for example:
error). The names are specific to the utilities. For more details
always see the COLORS section in the man page for the utility.
The color-sequence is a color name, ASCII color sequences, or
escape sequences.
Color names
black, blink, blue, bold, brown, cyan, darkgray, gray, green,
halfbright, lightblue, lightcyan, lightgray, lightgreen,
lightmagenta, lightred, magenta, red, reset, reverse, and yellow.
ANSI color sequences
The color sequences are composed of sequences of numbers separated
by semicolons. The most common codes are:
0 to restore default color
1 for brighter colors
4 for underlined text
5 for flashing text
30 for black foreground
31 for red foreground
32 for green foreground
33 for yellow (or brown) foreground
34 for blue foreground
35 for purple foreground
36 for cyan foreground
37 for white (or gray) foreground
40 for black background
41 for red background
42 for green background
43 for yellow (or brown) background
44 for blue background
45 for purple background
46 for cyan background
47 for white (or gray) background
For example, to use a red background for alert messages in the
output of dmesg(1), use:
echo 'alert 37;41' >> /etc/terminal-colors.d/dmesg.scheme
Escape sequences
An escape sequence is necessary to enter a space, backslash,
caret, or any control character anywhere in a string, as well as a
hash mark as the first character. These C-style backslash-escapes
can be used:
\a Bell (ASCII 7)
\b Backspace (ASCII 8)
\e Escape (ASCII 27)
\f Form feed (ASCII 12)
\n Newline (ASCII 10)
\r Carriage Return (ASCII 13)
\t Tab (ASCII 9)
\v Vertical Tab (ASCII 11)
\? Delete (ASCII 127)
\_ Space
\\ Backslash (\)
\^ Caret (^)
\# Hash mark (#)
Comments
Lines where the first non-blank character is a # (hash) are
ignored. Any other use of the hash character is not interpreted as
introducing a comment.
TERMINAL_COLORS_DEBUG=all
enables debug output.
NO_COLOR
if defined, this disables output colorization unless
explicitly enabled by a command-line option. See
https://no-color.org/ for more details. Supported since
util-linux version 2.41.
$XDG_CONFIG_HOME/terminal-colors.d
$HOME/.config/terminal-colors.d
/etc/terminal-colors.d
Disable colors for all compatible utilities:
touch /etc/terminal-colors.d/disable
Disable colors for all compatible utils on a vt100 terminal:
touch /etc/terminal-colors.d/@vt100.disable
Disable colors for all compatible utils except dmesg(1):
touch /etc/terminal-colors.d/disable
touch /etc/terminal-colors.d/dmesg.enable
The terminal-colors.d functionality is currently supported by all
util-linux utilities which provides colorized output. For more
details always see the COLORS section in the man page for the
utility.
For bug reports, use the issue tracker
<https://github.com/util-linux/util-linux/issues>.
terminal-colors.d is part of the util-linux package which can be
downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
part of the util-linux (a random collection of Linux utilities)
project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2025-08-11. (At that time, the date of the most recent commit that
was found in the repository was 2025-08-05.) If you discover any
rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
util-linux 2.42-start-521-ec46 2025-08-09 TERMINAL-COLORS.D(5)
Pages that refer to this page: cal(1), column(1), dmesg(1), hexdump(1), cfdisk(8), fdisk(8), sfdisk(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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