term% cat index.txt ASCII(1) General Commands Manual ASCII(1)
NAME
ascii, unicode - interpret ASCII, Unicode characters
SYNOPSIS
ascii [ -8 ] [ -oxdbn ] [ -nct ] [ text ]
unicode [ -nt ] hexmin-hexmax
unicode [ -t ] hex [ ... ]
unicode [ -n ] characters
look hex /lib/unicode
DESCRIPTION
Ascii prints the ASCII values corresponding to characters and vice
versa; under the -8 option, the ISO Latin-1 extensions (codes
0200-0377) are included. The values are interpreted in a settable nu‐
meric base; -o specifies octal, -d decimal, -x hexadecimal (the de‐
fault), and -bn base n.
With no arguments, ascii prints a table of the character set in the
specified base. Characters of text are converted to their ASCII val‐
ues, one per line. If, however, the first text argument is a valid num‐
ber in the specified base, conversion goes the opposite way. Control
characters are printed as two- or three-character mnemonics. Other op‐
tions are:
-n Force numeric output.
-c Force character output.
-t Convert from numbers to running text; do not interpret control
characters or insert newlines.
Unicode is similar; it converts between UTF and character values from
the Unicode Standard (see utf(6)). If given a range of hexadecimal
numbers, unicode prints a table of the specified Unicode characters —
their values and UTF representations. Otherwise it translates from UTF
to numeric value or vice versa, depending on the appearance of the sup‐
plied text; the -n option forces numeric output to avoid ambiguity with
numeric characters. If converting to UTF , the characters are printed
one per line unless the -t flag is set, in which case the output is a
single string containing only the specified characters. Unlike ascii,
unicode treats no characters specially.
The output of ascii and unicode may be unhelpful if the characters
printed are not available in the current font.
The file /lib/unicode contains a table of characters and descriptions,
sorted in hexadecimal order, suitable for look(1) on the lower case hex
values of characters.
EXAMPLES
ascii -d
Print the ASCII table base 10.
unicode p
Print the hex value of `p'.
unicode 2200-22f1
Print a table of miscellaneous mathematical symbols.
look 039 /lib/unicode
See the start of the Greek alphabet's encoding in the Unicode
Standard.
FILES
/lib/unicode
table of characters and descriptions.
SOURCE
/sys/src/cmd/ascii.c
/sys/src/cmd/unicode.c
SEE ALSO
look(1) tcs(1), utf(6), font(6),
ASCII(1)