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## ext, extract

Circuit netlist extractor

### Usage:

> extract option

> > where option may be one of the following:
> > all
> >   Extract the root cell and all its children. This bypasses the incremental extraction and ensures that a new `.ext` file is written for every cell definition.
> > cell name
> >   Extract the indicated cell into file name
> > do|no [option]
> >   Enable or disable an extractor option, where option may be one of the following:

> >   > capacitance
> >   > resistance
> >   > coupling
> >   > length
> >   > adjust
> >   > all

> > length [option]
> >   Control pathlength extraction information, where option may be one of the following:

> >   > driver termname
> >   > receiver termname
> >   > clear

> > help
> >   Print help information
> > parents
> >   Extract the selected cell and all its parents
> > showparents
> >   List the cell and all parents of selected cell. Note that this is not really an extract option and is superceded by the cellname command.
> > [list|listall] style [stylename]
> >   Set the current extraction style to stylename. Without arguments, print the current extraction style. With keyword list, return the current extraction style as a Tcl result. With keyword listall, return all valid extraction styles for the technology as a Tcl list.
> > unique [#]
> >   Generate unique names when different nodes have the same name
> > warn [[no] option]
> >   Enable/disable reporting of non-fatal errors, where option may be one of the following:

> >   > fets
> >   > labels
> >   > dup
> >   > all

### Summary:

> With no options given, the extract command incrementally extracts the root cell and all its children into separate `.ext` files. With options, the effect is as described in the Usage section above.

### Implementation Notes:

> extract is implemented as a built-in magic command.

> ext is an alias for command extract (allowed abbreviation where the usage would otherwise be ambiguous).

### See Also:

> extresist
> ext2spice
> ext2sim

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Last updated: October 6, 2004 at 3:16am