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Man Pages


Manual Reference Pages  -  TEX (1)

NAME

tex, initex - text formatting and typesetting

CONTENTS

Synopsis
Description
Options
Environment
Files
Notes
Bugs
Trivia
Authors

SYNOPSIS

tex [options] [&format] [file|\commands]

DESCRIPTION

Run the T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X typesetter on file, usually creating file.dvi. If the file argument has no extension, ".tex" will be appended to it. Instead of a filename, a set of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X commands can be given, the first of which must start with a backslash. With a &format argument T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X uses a different set of precompiled commands, contained in format.fmt; it is usually better to use the -fmt format option instead.

T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X formats the interspersed text and commands contained in the named files and outputs a typesetter independent file (called DVI, which is short for DeVice Independent). T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X’s capabilities and language are described in The TeX for nroffbook. T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X is normally used with a large body of precompiled macros, and there are several specific formatting systems, such as L\h’-0.36m’\v’-0.15v’A\h’-0.15m’\v’0.15v’T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X, which require the support of several macro files.

This version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X looks at its command line to see what name it was called under. If they exist, then both initex and virtex are symbolic links to the tex executable. When called as initex (or when the -ini option is given) it can be used to precompile macros into a .fmt file. When called as virtex it will use the plain format. When called under any other name, T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X will use that name as the name of the format to use. For example, when called as tex the tex format is used, which is identical to the plain format. The commands defined by the plain format are documented in The TeX for nroffbook. Other formats that are often available include latex and amstex.

The non-option command line arguments to the T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X program are passed to it as the first input line. (But it is often easier to type extended arguments as the first input line, since UNIX shells tend to gobble up or misinterpret T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X’s favorite symbols, like backslashes, unless you quote them.) As described in The TeX for nroffbook, that first line should begin with a filename, a \controlsequence, or a &formatname.

The normal usage is to say


tex paper



to start processing paper.tex. The name paper will be the ‘‘jobname’’, and is used in forming output filenames. If T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X doesn’t get a filename in the first line, the jobname is texput. When looking for a file, T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X looks for the name with and without the default extension (.tex) appended, unless the name already contains that extension. If paper is the ‘‘jobname’’, a log of error messages, with rather more detail than normally appears on the screen, will appear in paper.log, and the output file will be in paper.dvi.

This version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X can look in the first line of the file paper.tex to see if it begins with the magic sequence %&. If the first line begins with %&format -translate-file tcxname then T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X will use the named format and translation table tcxname to process the source file. Either the format name or the -translate-file specification may be omitted, but not both. This overrides the format selection based on the name by which the program is invoked. The -parse-first-line option or the parse_first_line configuration variable controls whether this behaviour is enabled.

The e response to T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X’s error prompt causes the system default editor to start up at the current line of the current file. The environment variable TEXEDIT can be used to change the editor used. It may contain a string with "%s" indicating where the filename goes and "%d" indicating where the decimal line number (if any) goes. For example, a TEXEDIT string for emacs can be set with the sh command


TEXEDIT="emacs +%d %s"; export TEXEDIT



A convenient file in the library is null.tex, containing nothing. When T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X can’t find a file it thinks you want to input, it keeps asking you for another filename; responding ‘null’ gets you out of the loop if you don’t want to input anything. You can also type your EOF character (usually control-D).

OPTIONS

This version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X understands the following command line options.
-enc Enable the encT\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X extensions. This option is only effective in combination with -ini. For documentation of the encT\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X extensions see http://www.olsak.net/enctex.html.
-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.
-fmt format
  Use format as the name of the format to be used, instead of the name by which T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X was called or a %& line.
-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.
-kpathsea-debug bitmask
  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 MLT\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X 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, then along the normal search path. See also description of the TEXMFOUTPUT environment variable.
-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 places of the DVI file. where is a comma-separated value list: cr, display, hbox, math, par, parent, 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 T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X formats, you cannot use ~ in a filename you give directly to T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X, 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, T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X 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 tex paper and the current directory is not writable, if TEXMFOUTPUT has the value /tmp, T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X attempts to create /tmp/paper.log (and /tmp/paper.dvi, if any output is produced.) TEXMFOUTPUT is also checked for input files, as T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X 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 probably 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 directory and ‘‘/home/user/tex’’ to the standard search path.
TEXFORMATS
  Search path for format files.
TEXPOOL
  search path for tex internal strings.
TEXEDIT
  Command template for switching to editor. The default, usually vi, is set when T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X 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.
texmf.cnf
  Configuration file. This contains definitions of search paths as well as other configuration parameters like parse_first_line.
tex.pool
  Text file containing T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X’s internal strings.
texfonts.map
  Filename mapping definitions.
*.tfm Metric files for T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X’s fonts.
*.fmt Predigested T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X format (.fmt) files.
$TEXMFMAIN/tex/plain/base/plain.tex
  The basic macro package described in the TeX for nroffbook.

NOTES

This manual page is not meant to be exhaustive. The complete documentation for this version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X can be found in the info manual Web2C: A TeX implementation.

BUGS

This version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X implements a number of optional extensions. In fact, many of these extensions conflict to a greater or lesser extent with the definition of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X. When such extensions are enabled, the banner printed when T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X starts is changed to print TeXk instead of TeX.

This version of T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X 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.

SEE ALSO

mf(1),
Donald E. Knuth, The TeX for nroffbook, Addison-Wesley, 1986, ISBN 0-201-13447-0.
Leslie Lamport, L\h’-0.36m’\v’-0.15v’A\h’-0.15m’\v’0.15v’T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X - A Document Preparation System, Addison-Wesley, 1985, ISBN 0-201-15790-X.
K. Berry, Eplain: Expanded plain T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X, ftp://ftp.cs.umb.edu/pub/tex/eplain/doc.
Michael Spivak, The Joy of TeX for nroff, 2nd edition, Addison-Wesley, 1990, ISBN 0-8218-2997-1.
TUGboat (the journal of the T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X Users Group).

TRIVIA

T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X, pronounced properly, rhymes with ‘‘blecchhh.’’ The proper spelling in typewriter-like fonts is ‘‘TeX’’ and not ‘‘TEX’’ or ‘‘tex.’’

AUTHORS

T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X was created by Donald E. Knuth, who implemented it using his WEB system for Pascal programs. It was ported to Unix at Stanford by Howard Trickey, and at Cornell by Pavel Curtis. The version now offered with the Unix T\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X distribution is that generated by the WEB to C system (web2c), originally written by Tomas Rokicki and Tim Morgan.

The encT\h’-0.1667m’\v’0.20v’E\v’-0.20v’\h’-0.125m’X extensions were written by Petr Olsak.

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Web2C 2015 TEX (1) 27 April 2015

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