Running Scripts in Sherpa

Sherpa Threads (CIAO 4.1)

[S-Lang Syntax]

Overview

Last Update: 19 Jun 2009 - original version

Synopsis:

This thread lists the available options for running scripts of Sherpa commands in the S-Lang interface of Sherpa. In this thread we refer to a "script" as an ASCII file containing a list of S-Lang Sherpa commands.

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Running scripts in S-Lang

1. To run a script of S-Lang Sherpa commands within the S-Lang environment before starting a Sherpa session:

a) type the following at the Unix prompt:

         unix% sherpa scriptname

                 or

	 unix% sherpa -l slang scriptname

This will open S-Lang Sherpa, run the batch of commands contained in the script, and then exit. Note that the "-l slang" startup option is not necessary if your CIAO_SCRIPT_LANG environment variable is set to "slang"; in this case, Sherpa defaults to the S-Lang interface. See the Sherpa thread "Starting Sherpa" for details on startup options.

b) or complete the following steps:

add these lines to the top of the script of S-Lang Sherpa commands so that you can execute the script from the Unix command line without having to explicitly start a Sherpa session:

 
	  #! /usr/bin/env slsh 
	  require("sherpa");

make the script executable

         unix% chmod +x scriptname

and run the script by typing the script name at the Unix prompt.

	  unix% ./scriptname

S-lang Sherpa will exit automatically when the script completes.

2. If you would like to run a script from within an S-Lang Sherpa session, you can use the "evalfile" command:

         unix% sherpa 
	 -----------------------------------------------------
	 Welcome to Sherpa: CXC's Modeling and Fitting Package
	 -----------------------------------------------------
	 CIAO 4.1.2 Thursday, April 2, 2009

	 sherpa-1> evalfile("scriptname");

History

19 Jun 2009

original version