# CentOS 7.0 - man page for etex (centos section 1)

```ETEX(1) 						      General Commands Manual							   ETEX(1)

NAME
etex - extended (plain) TeX

SYNOPSIS
etex [options] [&format] [file|\commands]

DESCRIPTION
Run  the  e-TeX	typesetter  on	file, by default creating file.dvi.  If the file argument has no extension, ".tex" will be appended to it.
Instead of a filename, a set of e-TeX commands can be given, the first of which must start with a backslash.  With a &format argument e-TeX
uses a different set of precompiled commands, contained in format.fmt; it is usually better to use the -fmt format option instead.

e-TeX  is  the  first  concrete result of an international research & development project, the NTS Project, which was established under the
aegis of DANTE e.V. during 1992. The aims of the project are to perpetuate and develop the spirit and philosophy of TeX, whilst	respecting
Knuth's wish that TeX should remain frozen.

e-TeX  can  be  used  in  two  different modes: in compatibility mode it is supposed to be completely interchangable with standard TeX.	In
extended mode several new primitives are added that facilitate (among other things) bidirectional typesetting.

An extended mode format is generated by prefixing the name of the source file for the format with an asterisk (*).

e-TeX's handling of its command-line arguments is similar to that of the other TeX programs in the web2c implementation.

OPTIONS
This version of e-TeX understands the following command line options.

-fmt format
Use format as the name of the format to be used, instead of the name by which e-TeX was called or a %& line.

-enc   Enable the encTeX extensions.  This option is only effective in combination with -ini.  For documentation of the	encTeX	extensions
see http://www.olsak.net/enctex.html.

-etex  Enable the e-TeX extensions.  This option is only effective in combination with -ini.

-file-line-error
Print error messages in the form file:line:error which is similar to the way many compilers format them.

-no-file-line-error
Disable printing error messages in the file:line:error style.

-file-line-error-style
This is the old name of the -file-line-error option.

-halt-on-error
Exit with an error code when an error is encountered during processing.

-help  Print help message and exit.

-ini   Start  in  INI mode, which is used to dump formats.  The INI mode can be used for typesetting, but no format is preloaded, and basic
initializations like setting catcodes may be required.

-interaction mode
Sets the interaction mode.  The mode can be either batchmode, nonstopmode, scrollmode, and  errorstopmode.   The	meaning  of  these
modes is the same as that of the corresponding \commands.

-ipc   Send DVI output to a socket as well as the usual output file.  Whether this option is available is the choice of the installer.

-ipc-start
As -ipc, and starts the server at the other end as well.	Whether this option is available is the choice of the installer.

-jobname name
Use name for the job name, instead of deriving it from the name of the input file.

Sets path searching debugging flags according to the bitmask.  See the Kpathsea manual for details.

-mktex fmt
Enable mktexfmt, where fmt must be either tex or tfm.

-mltex Enable MLTeX extensions.	Only effective in combination with -ini.

-no-mktex fmt
Disable mktexfmt, where fmt must be either tex or tfm.

-output-comment string
Use string for the DVI file comment instead of the date.

-output-directory directory
Write  output  files  in	directory  instead of the current directory.  Look up input files in directory first, the along the normal
search path.

-parse-first-line
If the first line of the main input file begins with %& parse it to look for a dump name or a -translate-file option.

-no-parse-first-line
Disable parsing of the first line of the main input file.

-progname name
Pretend to be program name.  This affects both the format used and the search paths.

-recorder
Enable the filename recorder.  This leaves a trace of the files opened for input and output in a file with extension .fls.

-shell-escape
Enable the \write18{command} construct.  The command can be any shell command.  This construct is normally disallowed  for  security
reasons.

-no-shell-escape
Disable the \write18{command} construct, even if it is enabled in the texmf.cnf file.

-src-specials
Insert source specials into the DVI file.

-src-specials where
Insert source specials in certain placed of the DVI file.  where is a comma-separated value list: cr, display, hbox, math, par, par-
ent, or vbox.

-translate-file tcxname
Use the tcxname translation table to set the mapping of input characters and re-mapping of output characters.

-default-translate-file tcxname
Like -translate-file except that a %& line can overrule this setting.

-version
Print version information and exit.

ENVIRONMENT
See the Kpathsearch library documentation (the `Path specifications' node) for precise details of how the environment variables	are  used.
The kpsewhich utility can be used to query the values of the variables.

One  caveat:  In most e-TeX formats, you cannot use ~ in a filename you give directly to e-TeX, because ~ is an active character, and hence
is expanded, not taken as part of the filename.	Other programs, such as Metafont, do not have this problem.

TEXMFOUTPUT
Normally, e-TeX puts its output files in the current directory.  If any output file cannot be opened there, it tries to open  it	in
the  directory specified in the environment variable TEXMFOUTPUT.  There is no default value for that variable.  For example, if you
say etex paper and the current directory is not writable, if TEXMFOUTPUT has the value /tmp, e-TeX attempts to create /tmp/paper.log
(and  /tmp/paper.dvi,  if  any  output is produced.)  TEXMFOUTPUT is also checked for input files, as TeX often generates files that
need to be subsequently read; for input, no suffixes (such as ``.tex'') are added by default, the input name is  simply  checked	as
given.

TEXINPUTS
Search path for \input and \openin files.  This should start with ``.'', so that user files are found before system files.  An empty
path component will be replaced with the paths defined in the texmf.cnf file.  For example, set TEXINPUTS to ".:/home/user/tex:"	to
prepend the current direcory and ``/home/user/tex'' to the standard search path.

TEXFORMATS
Search path for format files.

TEXPOOL
search path for etex internal strings.

TEXEDIT
Command template for switching to editor.  The default, usually vi, is set when e-TeX is compiled.

TFMFONTS
Search path for font metric (.tfm) files.

FILES
The location of the files mentioned below varies from system to system.	Use the kpsewhich utility to find their locations.

etex.pool
Text file containing e-TeX's internal strings.

texfonts.map
Filename mapping definitions.

*.tfm  Metric files for e-TeX's fonts.

*.fmt  Predigested e-TeX format (.fmt) files.

NOTES
Starting  with  version 1.40, pdfTeX incorporates the e-TeX extensions, so in this installation eTeX may be just a symbolic link to pdfTeX.
See pdftex(1).  This manual page is not meant to be exhaustive.	The complete documentation for this version of e-TeX can be found  in  the
info manual Web2C: A TeX implementation.

BUGS
This version of e-TeX implements a number of optional extensions.  In fact, many of these extensions conflict to a greater or lesser extent
with the definition of e-TeX.  When such extensions are enabled, the banner printed when e-TeX starts is changed to print e-TeXk instead of
e-TeX.

This  version  of  e-TeX  fails to trap arithmetic overflow when dimensions are added or subtracted.  Cases where this occurs are rare, but
when it does the generated DVI file will be invalid.