CCDFORK- Creates a script for executing CCDPACK commands in a background process

Description:

This procedure performs any additional work that is required to safely execute a set of CCDPACK commands in a background job.

The input to it is a file that contains just the CCDPACK commands that you want to execute. This procedure then writes another script that re-initializes CCDPACK and isolates any existing program parameters from your interactive processes.

The output script should be executed as a nice priority background job (see the examples section).

Usage:

ccdfork user_script [output_script] [directory]

Parameters:

$1 = filename (read)

The name of the script file which contains the CCDPACK commands which are to be run in the background.

$2 = filename (write)

The name of the output script which will re-establish the current ADAM context and execute your command file. [ccdpack_fork]

$3 = directory (write)

The name of a directory in which to store the current ADAM context. If no value is given then a sub-directory of the current ADAM_USER parent is created.

[adam_unique_string]

Examples:

ccdfork ccdred
nice ccdpack_fork &

In this example CCDFORK saves the current ADAM parameter files and writes a script file named ccdpack_fork which will enable the ccdred script file to execute in the background. The output script ccdpack_fork is then nice'd into the background.

ccdfork ccdred batch1
nice batch1 &

As above except that the output script is now called batch1.

ccdfork ccdred batch2 /scratch/user/batch2

As above except the output script is now called batch2 and the ADAM parameter files are written to the directory /scratch/user/batch2.

See also :

``Background processing''.

Note :

• C shell specific.