09-05-2009
Conceptually, those two tools are accomplishing exactly what you described in your OP. So using those as examples, you should be able to adapt to a shell script.
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gretl(1) econometrics gretl(1)
NAME
gretl - GNU Regression, Econometrics and Time-series Library
SYNOPSIS
gretl [ options ] [ datafile | scriptfile | sessionfile ]
DESCRIPTION
gretl is an econometrics package, built around a shared library which may be accessed using a command-line client program (gretlcli) or a
graphical user interface (gretl_x11). The program gretl is a wrapper script that calls the GUI if the DISPLAY environment variable is set,
otherwise the command-line client.
For details, please start up either the GUI or the command-line client and consult the online help, or read the printed manual, which is
available in PDF format via the gretl website, http://gretl.sourceforge.net.
OPTIONS
These are the options supported by the gretl_x11 program; gretlcli is a little different.
-r script, --run script
Open a script.
-c, --dump
Dump the configuration file.
-d database, --db database
Open a local database.
-e, --english
Force use of English.
-r script, --run script
Open a script.
-w database, --webdb database
Open a remote database.
-h, --help
Give help information and exit.
-v, --version
Give version information and exit.
FILES
~/.gretl2rc per-user configuration file
~/.gretl directory for user runtime files
ENVIRONMENT VARIABLES
HOME Specifies the user's home directory
DISPLAY
Specifies the X window display to use
SEE ALSO
gretlcli(1)
AUTHOR
The gretl team
The gretl team 1.9.5 gretl(1)