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:
Turns off output colorization for all compatible utilities.
Turns on output colorization; any matching
disable files
are ignored.
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.
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 following statement is recognized:
name color-sequence
The name is a
logical name of 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.
black, blink, blue, bold, brown, cyan, darkgray, gray, green, halfbright, lightblue, lightcyan, lightgray, lightgreen, lightmagenta, lightred, magenta, red, reset, reverse, and yellow.
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
To specify control or blank characters in the color sequences, C-style \-escaped notation 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 (#)
Please note that escapes are necessary to enter a space, backslash, caret, or any control character anywhere in the string, as well as a hash mark as the first character.
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
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.
terminal-colors.d is part of the util-linux package and is available from Linux Kernel Archive
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terminal-colors.d.5 -- Copyright 2014 Ondrej Oprala <oopralaredhat.com> Copyright (C) 2014 Karel Zak <kzakredhat.com> Copyright 2014 Red Hat, Inc. May be distributed under the GNU General Public License |