Command Language

Introduction

The two commands used to show and modify the keywords that define the state of the instrument are just this: 'show' and 'modify'. The aliased syntax is:

s ttime

for instance, will display the current value for the keyword 'ttime', the total exposure integration time. To modify it:

m ttime=100

will modify the total exposure time to 100 seconds.

These simple commands are actually aliases of:

show -s hires ttime, and

modify -s hires ttime=100

For a complete list of all of the keywords that can be showed or modified, type "s keywords". If you wish to find only keywords attached to a certain stage, say the comparison lamp system, pipe the command into the UNIX command 'grep':

s keywords | grep lamp

The keywords that are collected in the image header are these.

Examples

To change the number of erase counts to 7.

m erasecnt=7

To change the frame number to 1000.

m frameno=1000

The DCS keyword library can also be accessed from 'makua', by typing:

show -s dcs keywords

Review these here, if needed.