DOKK / manpages / debian 11 / tcs / tcs.1.en
TCS(1) General Commands Manual TCS(1)

tcs - translate character sets

tcs [ -slcv ] [ -f ics ] [ -t ocs ] [ file ... ]

Tcs interprets the named file(s) (standard input default) as a stream of characters from the ics character set or format, converts them to runes, and then converts them into a stream of characters from the ocs character set or format on the standard output. The default value for ics and ocs is utf, the UTF encoding described in utf(6). The -l option lists the character sets known to tcs. Processing continues in the face of conversion errors (the -s option prevents reporting of these errors). The -c option forces the output to contain only correctly converted characters; otherwise, 0x80 characters will be substituted for UTF encoding errors and 0xFFFD characters will substituted for unknown characters.

The -v option generates various diagnostic and summary information on standard error, or makes the -l output more verbose.

Tcs recognizes an ever changing list of character sets. In particular, it supports a variety of Russian and Japanese encodings. Some of the supported encodings are

The Plan 9 UTF encoding, known by ISO as UTF-8
The deprecated original UTF encoding from ISO 10646
7-bit ASCII
8859-1
Latin-1 (Central European)
8859-2
Latin-2 (Czech .. Slovak)
8859-3
Latin-3 (Dutch .. Turkish)
8859-4
Latin-4 (Scandinavian)
8859-5
Part 5 (Cyrillic)
8859-6
Part 6 (Arabic)
8859-7
Part 7 (Greek)
8859-8
Part 8 (Hebrew)
8859-9
Latin-5 (Finnish .. Portuguese)
KOI-8 (GOST 19769-74)
ISO 2022-JP
EUC-JX: JIS 0208
Microsoft, or Shift-JIS
(from only) guesses between ISO 2022-JP, EUC or Shift-Jis
Chinese national standard (GB2312-80)
Big 5 (HKU version)
Unicode Standard 1.0
Thai character set plus ASCII (TIS 620-1986)
IBM PC: CP 437
Atari-ST character set

Convert 8859-1 (Latin-1) characters into UTF format.
Convert characters encoded in one of several shift JIS encodings into UTF format. Unknown Kanji will be converted into 0xFFFD characters.
Print an up to date list of the supported character sets.

/sys/src/cmd/tcs

ascii(1), rune(2), utf(6).