rgb(1) User Commands rgb(1)

NAME

rgb - build the color name database

SYNOPSIS

rgb [ dbname ]

DESCRIPTION

rgb reads from standard input lines of the form:

red green blue name

where red / green / blue are decimal values between the range 0 to
255, and name is a description of the color. rgb then builds a color
name database in ndbm format. The color name database provides a
mapping between ASCII color names and RGB color values. It is useful
for increasing the portability of color programs. The input source
for the database is in /usr/lib/X11/rgb.txt. rgb.txt is compiled
into the ndbm files rgb.dir rgb.pag. When the server first starts
up, it consults the contents of these files to build an internal
representation of their contents. This internal representation is
consulted to map color names to color values.

rgb uses the default color name database of /usr/lib/X11/rgb.txt.

OPTIONS

dbname Color name database.

EXAMPLES

example% rgb rgb < /usr/lib/X11/rgb.txt

example% cat /usr/lib/X11/rgb.txt

FILES

/usr/lib/X11/rgb.txt color name database source. Maps color
names to RGB color values.
/usr/lib/X11/rgb.dir rgb.pag ndbm files containing color name to RGB
mapping.

SEE ALSO

cat(1), ndbm(3)

X Version 11 rgb 1.1.0 rgb(1)