This is the command freqplan9 that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
freq - print histogram of character frequencies
SYNOPSIS
freq [ -dxocr ] [ file ... ]
DESCRIPTION
Freq reads the given files (default standard input) and prints histograms of the character
frequencies. By default, freq counts each byte as a character; under the -r option it
instead counts UTF sequences, that is, runes.
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 -d, -x, -o, -c
flags specify a subset of value formats: decimal, hex, octal, and character, respectively.
SOURCE
/src/cmd/freq.c
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