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TEX(1)									TEX(1)

       tex, virtex, initex - text formatting and typesetting

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

       Run the TeX 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 TeX commands can be given, the first of which must
       start with a backslash.	With a &format argument TeX uses  a  different
       set  of	precompiled  commands,	contained in format.fmt; it is usually
       better to use the -fmt format option instead.

       TeX 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).  TeX's  capabilities  and	 language  are
       described  in The TeX for nroffbook.  TeX is normally used with a large
       body of precompiled macros, and there are several  specific  formatting
       systems,	 such  as  LaTeX,  which  require the support of several macro

       This version of TeX 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,  TeX  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 for‐
       mat 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 TeX 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 TeX'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 TeX doesn't get a filename
       in the first line, the jobname is texput.  When looking for a file, TeX
       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  out‐
       put file will be in paper.dvi.

       This version of TeX 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 TeX will use the named for‐
       mat 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 TeX'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" indicat‐
       ing  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
       TeX  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).

       This version of TeX understands the following command line options.

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

	      Print error messages in the form file:line:error which is	 simi‐
	      lar to the way many compilers format them.

	      Disable printing error messages in the 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 TeX was called or a %& line.

	      Exit with an error code when an error is encountered during pro‐

       -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.

	      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  MLTeX  extensions.   Only	 effective in combination with

       -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	direc‐
	      tory.   Look  up	input files in directory first, then along the
	      normal search path.  See also  description  of  the  TEXMFOUTPUT
	      environment variable.

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

	      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.

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

	      Enable the \write18{command} construct.  The command can be  any
	      shell  command.  This construct is normally disallowed for secu‐
	      rity reasons.

	      Disable the \write18{command} construct, even if it  is  enabled
	      in the texmf.cnf file.

	      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

	      Print version information and exit.

       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  TeX formats, you cannot use ~ in a filename you
       give directly to 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.

	      Normally, 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 TEXMFOUT‐
	      PUT.  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,  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 gener‐
	      ates files that need to be subsequently read; for input, no suf‐
	      fixes (such as ``.tex'') are added by default, the input name is
	      simply checked as given.

	      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.

	      Search path for format files.

	      search path for tex internal strings.

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

	      Search path for font metric (.tfm) files.

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

	      Configuration  file.   This contains definitions of search paths
	      as well as other configuration parameters like parse_first_line.

	      Text file containing TeX's internal strings.

	      Filename mapping definitions.

       *.tfm  Metric files for TeX's fonts.

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

	      The basic macro package described in the TeX for nroffbook.

       This manual page is not meant to be exhaustive.	The complete  documen‐
       tation for this version of TeX can be found in the info manual Web2C: A
       TeX implementation.

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

       This  version  of 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.

       Donald  E.  Knuth,  The	TeX  for nroffbook, Addison-Wesley, 1986, ISBN
       Leslie Lamport, LaTeX - A Document Preparation System,  Addison-Wesley,
       1985, ISBN 0-201-15790-X.
       K.	 Berry,	       Eplain:	      Expanded	      plain	  TeX,
       Michael Spivak, The Joy of TeX for nroff, 2nd edition,  Addison-Wesley,
       1990, ISBN 0-8218-2997-1.
       TUGboat (the journal of the TeX Users Group).

       TeX,  pronounced properly, rhymes with ``blecchhh.''  The proper spell‐
       ing in typewriter-like fonts is ``TeX'' and not ``TEX'' or ``tex.''

       TeX was designed 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 TeX distribution is that generated by the Web to
       C system (web2c), originally written by Tomas Rokicki and Tim Morgan.

       The encTeX extensions were written by Petr Olsak.

Web2C 2012			 1 March 2011				TEX(1)

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