Understanding Terminal Colors

pure theme

GNU based System

echo $LS_COLORS
rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:*.txt=00;33:

vim /etc/DIR_COLORS
vim ~/.dir_colors

eval "$(dircolors /etc/DIR_COLORS)"
eval "$(dircolors $HOME/.dir_colors)"

/etc/DIR_COLORS

# Configuration file for the color ls utility
# Synchronized with coreutils 8.5 dircolors
# This file goes in the /etc directory, and must be world readable.
# You can copy this file to .dir_colors in your $HOME directory to override
# the system defaults.

# COLOR needs one of these arguments: 'tty' colorizes output to ttys, but not
# pipes. 'all' adds color characters to all output. 'none' shuts colorization
# off.
COLOR tty

# Extra command line options for ls go here.
# Basically these ones are:
#  -F = show '/' for dirs, '*' for executables, etc.
#  -T 0 = don't trust tab spacing when formatting ls output.
OPTIONS -F -T 0

# Below, there should be one TERM entry for each termtype that is colorizable
TERM Eterm
TERM ansi
TERM color-xterm
TERM con132x25
TERM con132x30
TERM con132x43
TERM con132x60
TERM con80x25
TERM con80x28
TERM con80x30
TERM con80x43
TERM con80x50
TERM con80x60
TERM cons25
TERM console
TERM cygwin
TERM dtterm
TERM eterm-color
TERM gnome
TERM gnome-256color
TERM jfbterm
TERM konsole
TERM kterm
TERM linux
TERM linux-c
TERM mach-color
TERM mlterm
TERM putty
TERM rxvt
TERM rxvt-256color
TERM rxvt-cygwin
TERM rxvt-cygwin-native
TERM rxvt-unicode
TERM rxvt-unicode256
TERM screen
TERM screen-256color
TERM screen-256color-bce
TERM screen-bce
TERM screen-w
TERM screen.linux
TERM vt100
TERM xterm
TERM xterm-16color
TERM xterm-256color
TERM xterm-88color
TERM xterm-color
TERM xterm-debian

# EIGHTBIT, followed by '1' for on, '0' for off. (8-bit output)
EIGHTBIT 1

# Below are the color init strings for the basic file types. A color init
# string consists of one or more of the following numeric codes:
# Attribute codes:
# 00=none 01=bold 04=underscore 05=blink 07=reverse 08=concealed
# Text color codes:
# 30=black 31=red 32=green 33=yellow 34=blue 35=magenta 36=cyan 37=white
# Background color codes:
# 40=black 41=red 42=green 43=yellow 44=blue 45=magenta 46=cyan 47=white
#NORMAL 00      # no color code at all
#FILE 00        # normal file, use no color at all
RESET 0 # reset to "normal" color
DIR 01;34       # directory
LINK 01;36      # symbolic link (If you set this to 'target' instead of a
                # numerical value, the color is as for the file pointed to.)
MULTIHARDLINK 00        # regular file with more than one link
FIFO 40;33      # pipe
SOCK 01;35      # socket
DOOR 01;35      # door
BLK 40;33;01    # block device driver
CHR 40;33;01    # character device driver
ORPHAN 40;31;01  # symlink to nonexistent file, or non-stat'able file
MISSING 01;05;37;41 # ... and the files they point to
SETUID 37;41    # file that is setuid (u+s)
SETGID 30;43    # file that is setgid (g+s)
CAPABILITY 30;41        # file with capability
STICKY_OTHER_WRITABLE 30;42 # dir that is sticky and other-writable (+t,o+w)
OTHER_WRITABLE 34;42 # dir that is other-writable (o+w) and not sticky
STICKY 37;44    # dir with the sticky bit set (+t) and not other-writable

# This is for files with execute permission:
EXEC 01;32

# List any file extensions like '.gz' or '.tar' that you would like ls
# to colorize below. Put the extension, a space, and the color init string.
# (and any comments you want to add after a '#')
# executables (bright green)
#.cmd 01;32
#.exe 01;32
#.com 01;32
#.btm 01;32
#.bat 01;32
#.sh  01;32
#.csh 01;32
 # archives or compressed (bright red)
.tar 01;31
.tgz 01;31
.arj 01;31
.taz 01;31
.lzh 01;31
.lzma 01;31
.tlz 01;31
.txz 01;31
.zip 01;31
.z   01;31
.Z   01;31
.dz  01;31
.gz  01;31
.lz  01;31
.xz  01;31
.bz2 01;31
.tbz 01;31
.tbz2 01;31
.bz  01;31
.tz  01;31
.deb 01;31
.rpm 01;31
.jar 01;31
.rar 01;31
.ace 01;31
.zoo 01;31
.cpio 01;31
.7z  01;31
.rz  01;31

# image formats (magenta)
.jpg 01;35
.jpeg 01;35
.gif 01;35
.bmp 01;35
.pbm 01;35
.pgm 01;35
.ppm 01;35
.tga 01;35
.xbm 01;35
.xpm 01;35
.tif 01;35
.tiff 01;35
.png 01;35
.svg 01;35
.svgz 01;35
.mng 01;35
.pcx 01;35
.mov 01;35
.mpg 01;35
.mpeg 01;35
.m2v 01;35
.mkv 01;35
.ogm 01;35
.mp4 01;35
.m4v 01;35
.mp4v 01;35
.vob 01;35
.qt  01;35
.nuv 01;35
.wmv 01;35
.asf 01;35
.rm  01;35
.rmvb 01;35
.flc 01;35
.avi 01;35
.fli 01;35
.flv 01;35
.gl 01;35
.dl 01;35
.xcf 01;35
.xwd 01;35
.yuv 01;35
.cgm 01;35
.emf 01;35

# http://wiki.xiph.org/index.php/MIME_Types_and_File_Extensions
.axv 01;35
.anx 01;35
.ogv 01;35
.ogx 01;35

# audio formats (cyan)
.aac 01;36
.au 01;36
.flac 01;36
.mid 01;36
.midi 01;36
.mka 01;36
.mp3 01;36
.mpc 01;36
.ogg 01;36
.ra 01;36
.wav 01;36

# http://wiki.xiph.org/index.php/MIME_Types_and_File_Extensions
.axa 01;36
.oga 01;36
.spx 01;36
.xspf 01;36

ISO 6429 (ANSI) color sequences

man dir_colors

Most color-capable ASCII terminals today use ISO 6429 (ANSI) color sequences, and many common terminals without color capability, including xterm and the widely used and cloned DEC VT100, will recognize ISO 6429 color codes and harmlessly eliminate them from the output or emulate them. ls uses ISO 6429 codes by default, assuming colorization is enabled.
ISO 6429 color sequences are composed of sequences of numbers separated by semicolons. The most common codes are:

0restore default color  
1brighter colors  
4underlined text  
5flashing text  
30black foreground40black background
31red foreground41red background
32green foreground42green background
33yellow (or brown) foreground43yellow (or brown) background
34blue foreground44blue background
35purple foreground45purple background
36cyan foreground46cyan background
37white (or gray) foreground47white (or gray) background

Not all commands will work on all systems or display devices.

ls uses the following defaults:

NORMAL0Normal (nonfilename) text
FILE0Regular file
DIR32Directory
LINK36Symbolic link
ORPHANundefinedOrphaned symbolic link
MISSINGundefinedMissing file
FIFO31Named pipe (FIFO)
SOCK33Socket
BLK44;37Block device
CHR44;37Character device
EXEC35Executable file

A few terminal programs do not recognize the default properly. If all text gets colorized after you do a directory listing, change the NORMAL and FILE codes to the numerical codes for your normal foreground and background colors.

BSD based System

echo $LSCOLORS
exgxcxdxbxexexabagacad

export CLICOLOR=1
export LSCOLORS=exgxcxdxbxexexabagacad

LSCOLORS=exfxcxdxbxegedabagacad

man ls

The value of this variable describes what color to use for which attribute when colors are enabled with CLICOLOR (i.e. export CLICOLOR=1 in .bashrc). This string is a concatenation of pairs of the format fb, where f is the foreground color and b is the background color.

KEY1234567891011
LSexfxcxdxbxegedabagacad

KEYATTRIBUTELSFORMAT
1directoryeforeground
  xbackground
2symbolic linkfforeground
  xbackground
3socketcforeground
  xbackground
4pipedforeground
  xbackground
5executablebforeground
  xbackground
6block specialeforeground
  gbackground
7character specialeforeground
  dbackground
8executable with setuid bit setaforeground
  bbackground
9executable with setgid bit setaforeground
  gbackground
10directory writable to others, with sticky bitaforeground
  cbackground
11directory writable to others, without sticky bitaforeground
  dbackground

The color designators are as follows:

 NORMAL (lower case Letter) BOLD (upper case letter)
ablackAbold black, usually shows up as dark grey
bredBbold red
cgreenCbold green
dyellow/brownDbold yellow/brown, usually shows up as yellow
eblueEbold blue
fmagentaFbold magenta
gcyanGbold cyan
hlight greyHbold light grey; looks like bright white
xdefault foreground or background  

Visual result for exfxcxdxbxegedabagacad:

PAIRKEYATTRIBUTE
ex1directory
fx2symbolic link
cx3socket
dx4pipe
bx5executable
eg6block special
ed7character special
ab8executable with setuid bit set
ag9executable with setgid bit set
ac10directory writable to others, with sticky bit
ad11directory writable to others, without sticky bit

The default is exfxcxdxbxegedabagacad, i.e. blue foreground and default background for regular directories, black foreground and red background for setuid executables, etc.

Terminal ANSI Colors

Note that the above are standard ANSI colors. The actual display may differ depending on the color capabilities of the terminal in use. You can setup your terminal like this:

 NormalBright
Black  
Red  
Green  
Yellow  
Blue  
Magenta  
Cyan  
White  

Tomorrow Night Eighties Color Scheme

Backgr.
Currentln
Selection
Text
Comment
Red
Orange
Yellow
Green
Aqua
Blue
Purple
#2d2d2d
#393939
#515151
#cccccc
#999999
#f2777a
#f99157
#ffcc66
#99cc99
#66cccc
#6699cc
#cc99cc
hsl(0,0%,18%)
hsl(0,0%,22%)
hsl(0,0%,32%)
hsl(0,0%,80%)
hsl(0,0%,60%)
hsl(359,83%,71%)
hsl(21,93%,66%)
hsl(40,100%,70%)
hsl(120,33%,70%)
hsl(180,50%,60%)
hsl(210,50%,60%)
hsl(300,33%,70%)

Pure Prompt

Combine that with a nice prompt and the terminal experience is almost perfect.

pure theme

Get Sindre Sorhus' beautiful pure theme from here.

If you're running a zsh environment manager the integration is as simple as this:

# example for zgen
zgen load mafredri/zsh-async
zgen load sindresorhus/pure

That's it. No npm install, or symlinks, even autoload -U promptinit; promptinit and no prompt pure.
It should be by default in $fpath.