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ngspice

NAME

ngspice - circuit simulator derived from spice]3f5

SYNOPSIS

ngspice [options] [file ...]

DESCRIPTION

This man page is just a small overview. The primary documentation of ngspice is in the ngspice] User's Manual, which is available as a pdf file.

OPTIONS

-n or --no-spiceinit

Don't try to source the file ".spiceinit" upon startup. Normally ngspice] tries to find the file in the current directory, and if it is not found then in the user's home directory.

-q or --completion

Enable command completion. (defect)

-t term or --term=term

The program is being run on a terminal with mfb name term.

-b or --batch

Run in batch mode. ngspice] will read the standard input or the specified input file and do the simulation. Note that if the standard input is not a terminal, ngspice] will default to batch mode, unless the -i flag is given.

-s or --server

Run in server mode. This is like batch mode, except that a temporary rawfile is used and then written to the standard output, preceded by a line with a single "@", after the simulation is done. This mode is used by the ngspice daemon.

-i or --interactive

Run in interactive mode. This is useful if the standard input is not a terminal but interactive mode is desired. Command completion is not available unless the standard input is a terminal, however.

-r rawfile or --rawfile=file

Use rawfile as the default file into which the results of the simulation are saved.

-c circuitfile or --circuitfile=circuitfile

Use circuitfile as the default input deck.

-h or --help

Display a verbose help on the arguments available to the program.

-v or --version

Display a version number and copyright information of the program.

-a or --autorun

FIXME

-o outfile or --output=outfile

All logs generated during a batch run (-b) will be saved in outfile.

-p or --pipe

Allow a program (e.g., xcircuit) to act as a GUI frontend for ngspice through a pipe. Thus ngspice will assume that the pipe is a tty and allows to run in interactive mode.

Further arguments are taken to be spice] input decks, which are read and saved. (If batch mode is requested then they are run immediately.)

ENVIRONMENT

SPICE_LIB_DIR

SPICE_EXEC_DIR

SPICE_HOST

SPICE_BUGADDR

SPICE_EDITOR

SPICE_ASCIIRAWFILE default 0

Format of the rawfile. 0 for binary, and 1 for ascii.

SPICE_NEWS default $SPICE_LIB_DIR/news

A file which is copied verbatim to stdout when ngspice starts in interactive mode.

SPICE_MFBCAP default $SPICE_LIB_DIR/mfbcap

SPICE_HELP_DIR default $SPICE_LIB_DIR/helpdir

SPICE_SCRIPTS default $SPICE_LIB_DIR/scripts

In this directory the spinit file will be searched.

SPICE_PATH default $SPICE_EXEC_DIR/ngspice

various undocumented ngspice centric environment variables :

NGSPICE_MEAS_PRECISION

SPICE_NO_DATASEG_CHECK

Common environment variables :

TERM LINES COLS DISPLAY HOME PATH EDITOR SHELL

POSIXLY_CORRECT

FILES

$SPICE_LIB_DIR/scripts/spinit

The System's Initialisation File.

.spiceinit or $HOME/.spiceinit

The User's Initialisation File.

SEE ALSO

sconvert(1), ngnutmeg(1), mfb(3), writedata(3), and
ngspice] User's Manual at http://ngspice.sourceforge.net/docs.html

BUGS

Please report bugs to the ngspice project via
http://ngspice.sourceforge.net/bugrep.html

AUTHORS

spice3: Tom Quarles (quarles@cad.berkeley.edu)
nutmeg: User interface: Wayne Christopher (faustus@cad.berkeley.edu)
ngspice: various authors (see http://sourceforge.net/projects/ngspice/)