.TH FREQ 1plan9
.SH NAME
freq \- print histogram of character frequencies
.SH SYNOPSIS
.B freq
[
.B -dxocr
]
[
.I file ...
]
.SH DESCRIPTION
.I Freq
reads the given files (default standard input)
and prints histograms of the character frequencies.
By default,
.I freq
counts each byte as a character;
under the
.B -r
option it instead counts
.SM UTF
sequences, that is, runes.
.PP
Each non-zero entry of the table is printed preceded by the byte value,
in decimal, octal, hex, and
Unicode
character (if printable).
If any options are given, the
.BR -d ,
.BR -x ,
.BR -o ,
.B -c
flags specify a subset of value formats: decimal, hex, octal, and
character, respectively.
.SH SOURCE
.B \*9/src/cmd/freq.c
.SH SEE ALSO
.IR utf (7),
.IR wc (1)