tex --version (return code: 0)
TeX 3.14159265 (TeX Live 2015/Debian)
kpathsea version 6.2.1
Copyright 2015 D.E. Knuth.
There is NO warranty. Redistribution of this software is
covered by the terms of both the TeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the TeX source.
Primary author of TeX: D.E. Knuth.
tex --help (return code: 0)
Usage: tex [OPTION]... [TEXNAME[.tex]] [COMMANDS]
or: tex [OPTION]... \FIRST-LINE
or: tex [OPTION]... &FMT ARGS
Run TeX on TEXNAME, usually creating TEXNAME.dvi.
Any remaining COMMANDS are processed as TeX input, after TEXNAME is read.
If the first line of TEXNAME is %&FMT, and FMT is an existing .fmt file,
use it. Else use `NAME.fmt', where NAME is the program invocation name,
most commonly `tex'.
Alternatively, if the first non-option argument begins with a backslash,
interpret all non-option arguments as a line of TeX input.
Alternatively, if the first non-option argument begins with a &, the
next word is taken as the FMT to read, overriding all else. Any
remaining arguments are processed as above.
If no arguments or options are specified, prompt for input.
-enc enable encTeX extensions such as \mubyte
[-no]-file-line-error disable/enable file:line:error style messages
-fmt=FMTNAME use FMTNAME instead of program name or a %& line
-halt-on-error stop processing at the first error
-ini be initex, for dumping formats; this is implicitly
true if the program name is `initex'
-interaction=STRING set interaction mode (STRING=batchmode/nonstopmode/
scrollmode/errorstopmode)
-ipc send DVI output to a socket as well as the usual
output file
-ipc-start as -ipc, and also start the server at the other end
-jobname=STRING set the job name to STRING
-kpathsea-debug=NUMBER set path searching debugging flags according to
the bits of NUMBER
[-no]-mktex=FMT disable/enable mktexFMT generation (FMT=tex/tfm)
-mltex enable MLTeX extensions such as \charsubdef
-output-comment=STRING use STRING for DVI file comment instead of date
-output-directory=DIR use existing DIR as the directory to write files in
[-no]-parse-first-line disable/enable parsing of first line of input file
-progname=STRING set program (and fmt) name to STRING
-recorder enable filename recorder
[-no]-shell-escape disable/enable \write18{SHELL COMMAND}
-shell-restricted enable restricted \write18
-src-specials insert source specials into the DVI file
-src-specials=WHERE insert source specials in certain places of
the DVI file. WHERE is a comma-separated value
list: cr display hbox math par parend vbox
-translate-file=TCXNAME use the TCX file TCXNAME
-8bit make all characters printable by default
-help display this help and exit
-version output version information and exit
Email bug reports to tex-k@tug.org.