# Ltxshell v1.13 – Shell for LATEX Commands

## Short description

Support by text editors for calling external TEX/LATEX-related programs ranges from “good” (Emacs + AucTeX) to “nearly absent” (gVim). Ltxshell provides a simple interface LATEX-related tools for those who write LATEX-documents. Among the programs supported by ltxshell are (PDF)LATEX, dvi-viewer (yap, xdvi), dvips, dvipdfm, gv/gsview32 and others on win32- and Linux-systems. Ltxshell is intended to run in a separate console window independent from the LATEX text editor. Depending on the LATEX-user's writing habits it may be useful to be used together with any text editor.

Ltxshell is provided as win32 console program. For its use on Linux-systems, the binary executable file has to be compiled from the sourcecode. Ltxshell can easily be installed manually and it is configurable for various (La)TeX-implementations: MikTeX, teTeX, TEXLive.

Ltxshell supports single-file LATEX-projects and multiple-file projects, but its full support reqiures that all LATEX-files currently edited are in one directory/folder.

## 1  Installation

### 1.1  Win32-Systems

Extract the contents of the archive with the binary files (ltxshell_nnn_w32.zip1) into a temporary directory. It is recommended to copy these files into c:\ltxshell, since settings in the configuration file ltxshell.cfg have default values2 assuming installation in this folder/dictionary. Add an environment variable named LTXSHELL_CFG_PATH and assign the name of the directory of the configuration file to it:

   LTXSHELL_CFG_PATH=c:\ltxshell\


Now you should add the name of this directory to the string assigned to the PATH environment variable.

An example of a configuration file is shown in figure 1, the variable names are explained in Table 1.

It is assumed that while you edit the files of your LATEX-project with a large and comfortable editor (gVim, Gnu Emacs, Xemacs, jedit, SciTE3) and open a console window from which you call ltxshell. The text editor called by ltxshell should be light and simple and start quickly as e.g. Windows' notepad or win32pad4, for details see section 3.

 LINES_OF_SCREEN=25 # number of lines in the console window TEXT_EDITOR=notepad PROMPT=": " LATEX_OPTIONS="-src -quiet -halt-on-error" PDFLATEX_OPTIONS="-quiet" DVIPS_OPTIONS="-A" DVIPDFM_OPTIONS="-p a4" DVI_VIEWER=yap # MikTeX PDF_VIEWER="C:\Programme\Adobe\Acrobat 5.0\Acrobat\Acrobat.exe" PS_VIEWER=gsview32 BIBTEX8_OPTIONS=--huge MAKEINDEX_OPTIONS="-c" PATH_TO_TEMPLATES=c:\tex_pat # a directory with templates for LaTeX documents TEMP_FILES=.log .dvi .ps .aux .pdf .bbl .blg .ilg .ind .lof .lot .toc # files with these extensions belonging to the # current project are removed with the [rm] # command PRJNAME_FILE=prj.txt SHELLSC_FILE=c:\ltxshell\ltxshellsh.txt # file for ltxshells shell scripts' DVI_VIEWER_OPTIONS_FILE=c:\ltxshell\ltxshelldvi.txt DVI_VIEWER_OPTIONS=-s %l%f # enables forward search for MikTeXs yap ## Please uncoment one of the following: # DVI_VIEWER_OPTIONS_MODE=0 # ignore dvi-viewer options # DVI_VIEWER_OPTIONS_MODE=1 # load text editor with DVI_VIEWER_OPTIONS_FILE # containing name of currently edited file and # line number within currently edited file. DVI_VIEWER_OPTIONS_MODE=2 # process dvi-viewer options without # calling the text editor. This option assumes # that the LaTeX editor you use writes name of the # currently edited file into # DVI_VIEWER_OPTIONS_FILE ENV_HOME=c:\ispell # may be useful with Luzius Schneiders # ispell distribution # (http://www.luziusschneider.com), otherwise # please uncomment or remove this line CHECK_LATEX_PROJECT=lacheck 
 Figure 1: An example of a ltxshell configuration file. The character # introduces a comment. If you wish to insert a hash sign (#) explicitly, enter %hash. Empty lines are ignored. This configuation file assumes that you have installed gVim and that you are using MikTeX. If you use gVim together with ltxshell and MikTeX, it is recommended to use the vim-script latex-for-vim.vim, cf. footnote 3.3.4.

 BIBTEX_OPTIONS command line options for the bibtex program (default: empty string) BIBTEX8_OPTIONS command line options for the bibtex8 program (default: empty string) CHECK_LATEX_PROJECT name of LATEX syntax checker (default: lacheck) CLP_OPTIONS command line options for the LATEX syntax checker DVIPDFM_OPTIONS command line options for the dvipdfm program (default: empty string) DVIPS_OPTIONS command line options for the dvips program (default: empty string) DVI_VIEWER name of the dvi-viewing/-printing program (default: yap (MikTeX), xdvi (Linux)) DVI_VIEWER_OPTIONS pattern of additional command line options for the dvi-viewer (%f: name og currently edited file, %l: line number in currently edited file), default: empty string DVI_VIEWER_OPTIONS_FILE name of file where ltxshell can read the name of the currently edited file and the line number, default: empty string DVI_VIEWER_OPTIONS_MODE mode how ltxshell and text editor treat the file addressed by DVI_VIEWER_OPTIONS_FILE possible values: 0, 1, 2, default: 0 ENV_HOME HOME environment variable (visible for programs called by sh) (default c:\) LATEX_OPTIONS additional command line options for call to LATEX (default: empty string) LINES_OF_SCREEN number of lines of the screen of the console window (default: 25) MAKEINDEX_OPTIONS additional command line options for the makeindex program OUTPUT_FILE Name of output file for programs called by ltxshell, currently m clp PATH_TO_TEMPLATES path to the directory with LATEX document templates (default: empty string) PDF_VIEWER path/name of the pdf-files viewing/printing program (default: gsview32: you may change this to the name of the Acrobat reader or the Acrobat program) PDFLATEX_OPTIONS additional command line options for call to PDFLATEX (default: empty string) PRJNAME_FILE Name of file with the complete project .tex file and path (default: prj.txt) PROMPT command line prompt PS_VIEWER PostScript files viewing/printing program (default: gsview32) SHELLSC_FILE name of shell script TEMP_FILES list of temporary files extensions, extensions separated by spaces (default: .log .dvi .aux) TEXT_EDITOR name of text editor, called by cfg, e and log commands (default: notepad.exe: you should change this if you with to uses another file)
 Table 1: Complete table of variables for the configuration file

Each line of ltxshell.cfg consists of the name of the configuration variable, =' indicating assignment and the value on the right side. An example is PATH_TO_TEMPLATES: if you have a directory with empty templates for various LATEX documents you may copy them from the directory assigned to PATH_TO_TEMPLATES into the current working directory.

If you wish to check syntax of LATEX-files with the command m clp, you will have to install a copy of the program lacheck5.

### 1.2  Building and installing ltxshell on Linux systems

Compilation requires that you have the gcc (the GNU compiler collection) installed on your computer. Create a temporary directory and unzip the contents of ltxshell_nnn_src.zip6 into this directory. Open the Makefile with your text editor. The first lines foolowing the note on licensing conditions must have the format:

   ## win32 systems
#CFLAGS=-c -Wall -DLTXSHELL_USES_MINGW
#LTXSHELLEXE := ltxshell.exe

## Linux systems
CFLAGS=-c -Wall -DLTXSHELL_USES_LINUXGCC
LTXSHELLEXE := ltxshell


i. e. the commands for the compilation process on win32-systems must be commented out7.

Copy the ltxshell executable file into a directory included in the PATH environment variable. Write your configuration file .ltxshellcfg in your home direcory (i. e. create ~/.ltxshellcfg) with your text editor.

A good configuration for starting would be:

   TEXT_EDITOR=vim
PRJNAME_FILE=prj.txt
DVI_VIEWER=xdvi -geometry 1150x900 -s 5
DVI_VIEWER_OPTIONS_MODE=0
LATEX_OPTIONS=-src
PROMPT="--> "


 [ l] run LaTeX on project [ v] view dvi file [lv] l + v [ ps] create PS file with dvips [vps] view/print PS file [lpv] l + ps + vps [pdf] run pdfLaTeX on project [ vp] view/print pdf file [ dp] convert dvi to PDF with dvipdfm [ i] run makeindex on project [ b] run BibTeX [b8] BibTeX8 [log] show (pdf)LaTeX log file [ e] open text editor [cfg] edit configuration file [ sh] run shell command(s) [prj] show current project name [pwd] print current working directory [ cd] change working directory [ np] select (new) project [ ct] copy template into current directory [ rm] remove unused, temporary files [ m] more options [q] quit [menu]: 

 [clp] check LaTeX files of current project [ lf] select current LaTeX file [ a] about ltxshell [ q] quit, back to main menu [menu]: 
 Figure 3: Menu opened with m

Enter the menu commands in brackets, e.g. l8 to LATEX the project, l+v to (1) LATEX the project and (2) view the generated dvi-file, menu shows the menu again. Enter an empty string to activate the default visible in brackets. The option m opens the submenu (figure 3).

## 3  Use of ltxshell

If you use ltxshell, you will probably start the text editor for editing LATEX-files (the LATEX-editor, e. g. Vim, GNU Emacs, SciTE, jedit) independently fom ltxshell which should run in its own window. The text-editor called by ltxshell9 should be a “small” one which requires only short start times (e. g. notepad, win32pad (win32 systems); vim, joe (Linux)). It is not necessary that this small text editor has LATEX syntax highlighting, whereas this is recommended for your text editor which you use for editing text files.

After starting ltxshell, select np for a new project10 You will then be prompted to enter (the) first character(s) of the project file to be selected, if you enter an empty string, all .tex files in the current directory will be listed. Please select a LATEX main project file (the file of a project containing “\documentclass{}”). Alternatively you may start ltxshell with the project name as command line parameter:

   ltxshell myproject


if myproject.tex is the main project file. The name of the current project is printed by ltxshell with the command prj. With l, you will processes the project LATEX, v calls the dvi-viewer with the project dvi-file. l+v first LATEXes and then shows the project. Most of the other commands of the menu (figure 2) are self-explaining. If you wish to work on a new project, select the next project file with np. To change the directory, you may type cd [Return], enter the name of the new directory, and [Return].

### 3.1  Selection of text files

The menu options np and ct open a file selection screen (figure 4). If you call np or ct, you are prompted for the first character(s) of the file name, this allows you to restrict the number of files listed. If you call np t in the directory of figure 4, the list of figure 5 will appear.

  1: att.tex 2: dic.tex 3: einleitg.tex 4: grundl.tex 5: hemophil.tex 6: hemost.tex 7: hit2.tex 8: pl_funkt.tex 9: pli-verweise.tex 10: pli.tex 11: pltimm-allo.tex 12: pltimm-auto.tex 13: test.tex 14: thrombocytos.tex 15: thrombph.tex 16: tmiang.tex 17: unsort.tex 18: varia.tex 19: vwk.tex Select file number: 1..19, [q] to abort: 
 Figure 4: File selection screen

  Please enter initial character(s) of project name: t 1: test.tex 2: thrombocytos.tex 3: thrombph.tex 4: tmiang.tex Select file number: 1..4, [q] to abort: 
 Figure 5: File selection screen: only files beginning with “t” selected

### 3.2  Shell commands

With sh you can call external programs: if you have assigned the name of a file in the configuration file to SHELLSC_FILE, the sh command calls the text editor with the shell command file. You may enter lines with commands which will be executed after closing the text editor. The first empty line will stop the execution of the command file11.

A shell command file is useful for processing a series of commands on a LATEX project. As an example, if all temporary files (including the .aux) files of a project (e. g. myproject) have been deleted, the project can be compiled with the following group of commands:

   latex myproject
bibtex myproject
makeindex myproject
latex myproject
latex myproject
yap myproject


If you have already selected the project name with np, you may enter

   latex %p
bibtex %p
makeindex %p
latex %p
latex %p
yap %p


as “%p” will be expanded to the current project name. You may append filename extensions as in

   ...
latex %p
dvips %p
gsview %p.ps


Similarly, “%e” is expanded to the name of the text editor defined in the configuration file. The keyword stop interrupts the sequence of shell commands with a prompt. The group of shell commands

   lacheck %p.tex > out.txt
stop
%e out.txt
stop
del out.txt


checks the files of your current LATEX-file, opens the results file, and deletes it.

If a program called by sh requires that the HOME is assigned a value, this can be done with the ENV_HOME configuration variable12.

### 3.3  Support of forward search (dvi-viewer)

#### 3.3.1  MikTEX

This section should be introduced by a definition of “forward-search”. The following definition is taken from the documentation of Yap (MikTEXs dvi-viewer):

“While editing a TeX source, issue an appropriate command that invokes Yap to display the TeXed document. Yap will indicate its idea of the current edit position by drawing a small circle. This is called forward search.”

A prerequisite for forward searching using MikTEX is that the LATEX-source has been compiled with the -src command-line option. The appropriate command for yap is:

   yap --find-src-special=srcspecial project_name

   yap -s srcspecial project_name


where srcspecial means NNCURRENT_FILENAME with NN for the line number in the current file (you are just editing) and CURRENT_FILENAME the name of the current file. An example: You are working on a LATEX-project myproj with the main file:

   \documentclass{article}
...
\begin{document}
...
\include{subfile1}
\include{subfile2} ...
...
\end{document}


If you are just editing line number 255 of subfile2.tex and wish to jump to the corresponding text in yap, you will have to call

   yap -s 255subfile2.tex myproj.dvi


or

   yap --find-src-special=255subfile2.tex myproj.dvi


Ltxshell supports you in generating such calls to a dvi-viewer.

#### 3.3.2  Linux-Systems

If you use xdvi on a Linux system, “forward-search” works similarly as described in section 3.3.1 with call formatted:

   xdvi -sourceposition 255subfile2.tex myproj.dvi


#### 3.3.3  Details of ltxshell's support for forward-search

With the variable DVI_VIEWER_OPTIONS_FILE (in the configuration file) you may define a text file, where you can enter file name and line number of cursor position of the currently edited file. Ltxshell interprets the first line which is not empty as the filename of the currently edited file and the second non-empty line as the line number. If the variable DVI_VIEWER_OPTIONS_MODE has been assigned the value “1” ltxshell starts the text editor with DVI_VIEWER_OPTIONS_FILE if you select v or lv. You may then enter the file name and line number. After saving the file ltxshell generates a command line with the appropriate additional command line option required for forward search. The format for this additional command line options is defined by the variable DVI_VIEWER_OPTIONS in the configuration file. Here you may enter the currently edited file name with %f and the line number of the current cursor position with %l. For MikTEXs yap this is:

   DVI_VIEWER_OPTIONS=-s %l%f


or

   DVI_VIEWER_OPTIONS=--find-src-special=%l%f


For xdvi on Linux/Unix-system you should enter:

  DVI_VIEWER_OPTIONS=-sourceposition %l%f


If the variable DVI_VIEWER_OPTIONS_MODE has the value “0”, the file with the name of the currently edited file and line number is ignored, with the value “2” the file is read, but the text editor is not started. This is preferred, if the text editor for editing the LATEX files is able to generate the file with file name and line number. Details of this are described in section 3.3.4. With the value “1”, ltxshell opens the text editor with the file DVI_VIEWER_OPTIONS_FILE so that you can enter the currently edited file and the line number at which you are currently editing. You may write the name of the currently edited file with the command m lf.

#### 3.3.4  Forward-search – a solution for ltxshell and the vim text editor

Enter the following code fragment in a script file read by vim at startup13:

   :function PrintFileLineno()
redir! > c:\ltxshell\ltxshelldvi.txt
silent echo expand("%")
silent echo line(".")
redir END
:endfunction

au BufWritePre *.tex :call PrintFileLineno()


Whenever you edit a .tex file, vim writes name of currently edited file and line number into the file c:\ltxshell\ltxshelldvi.txt. You may edit this line in order to define another file in another directory. Now it is no more necessary to enter currently edited file and line number manually and you can assign the value “2” to the variable DVI_VIEWER_OPTIONS_MODE in the configuration file: the file c:\ltxshell\ltxshelldvi.txt will not be opened before the dvi-viewer is called by ltxshell, but ltxshell will read the file ltxshelldvi.txt. This is the most comfortable solution of forward-search with ltxshell.

Ltxshell writes the name of the main project .tex file into a small text file (e. g. prj.txt) if the name of this file has been assigned to the PRJNAME_FILE variable. This file can be included with:

  {\tiny\raggedleft\input{prj.txt}\par}


or a similar construct, to add the path/name of a document to its printed version like this14:

/home/kiefel/Documents/test1/doc/ltxshell.tex

This feature is similar to a commonly found practice with normal word processors.

## 4  Changes

v0.3: New menu option rm: calls the shell script to delete unused files. Selection of cd deletes the current project name. Menu option np now prompts for first letter(s) of the project name. Command line option --help now lists all variables for the configuration file. Documentation has been completely rewritten and is now provided as PDF-file.

v0.4: sh has now an enhanced function. If a filename is assigned to SHELLSC_FILE, sh calls the text editor for a shell script file.

v1.0: Shell commands files: “%p” is interpreted as the project name, “%e” as the text editor defined in the configuration file. The keyword stop interrupts a sequence of shell commands with a prompt. If a shell command returns 1 or higher, a message is issued. Ltxshell may be started with the project name as command line parameter.

v1.1: Command l+v renamed to lv. New command lpv: runs LATEX, dvips and the PostScript viewing/printing program. Layout of main menu changed. Bug removed: %p and %e can now be expanded more than one time in one command line (which was already intended for the previous version).

v1.2: Command rm now deletes temporary files of the current project, their filename extensions can be assigned to the variable TEMP_FILES. The configuration file variable DELETE_UNUSED_SCRIPT is no longer functional. New configuration file variable ENV_HOME, sets the HOME environment variable for shell scripts called with sh. Documentation updated.

v1.3: New configuration file variable MAKEINDEX_OPTIONS, sets options for the makeindex program. Variable PRJNAME_FILE added: ltxshell now writes name and complete path of the main project tex file into a text file. Documentation updated.

v1.4: Internal change – function listing files in a directory changed.

v1.5: Support for forward search in dvi-Viewer (e. g. Yap of MikTEX) new configuration variables DVI_VIEWER_OPTIONS, DVI_VIEWER_OPTIONS_MODE, DVI_VIEWER_OPTIONS_FILE.

v1.6: Changes of the menu structure: m leads to a submenu with a new option clp (check LATEX files) of the current project. After calling the cfg command, changes become effective at once, e. g. without restarting ltxshell. New configuration variables BIBTEX_OPTIONS, BIBTEX8_OPTIONS, CHECK_LATEX_PROJECT and CLP_OPTIONS. Documentation completed (section 3).

v1.7: Bugixes – ltxshell now reads variables DVI_VIEWER_OPTIONS, DVI_VIEWER_OPTIONS_FILE and DVI_VIEWER_OPTIONS_MODE correctly from the configuration file.

v1.8: Bugfix: unititialized variables fixed.

v1.9: Documentation completed.

v1.10: Configuration variable PDFLATEX_OPTIONS added.

v1.11: The manual installation procedure now assumes that the software is installed in c:\ltxshell by default. Description of the installation procedure has been rewritten. The command m lf (select current LATEX file) has been added.

v1.12: Ltxshell can now also be used with Linux, therefore the manual (this file) has been extended, figures and the table have been moved to the end of the manual. Several bugs fixed.

v1.13: Configuration file %hash inserts a hash sign (#) explicitly.

1
with nnn for the version number
2
which - of course - can be changed
3
This will be called LaTeX-editor in this documentation
4
5
available through CTAN:support/lacheck. An executable file is also available on the website http://people.freenet.de/vkiefel/compiled-SW.html
6
with nnn for the version number
7
If you wish to compile ltxshell on a win32-system, uncomment the two lines following the line “## win32 systems” and comment out the two lines following the line “## Linux systems
8
l means: enter “l” and press the return key
9
to be defined in the configuration file
10
A project for ltxshell is the name of the “main” file except the .tex filename extension.
11
i. e. everything following the empty line is ignored. This feature can be used to store “old” commands for later use in the same file
12
The program author encountered this problem with the ispell program
13
This code can be found in the program author's vim script latex-for-vim.vim which is available at http://people.freenet.de/vkiefel/ownsoftware.html in the archive http://people.freenet.de/vkiefel/latex-for-vim_nn.zip. This script comprises additional support for entering LATEX-commands, environments and BibTEXreferences
14
Ltxshell writes the path/filename with the \verb++ command

This document was translated from LATEX by HEVEA.