Issuing Commands

To run an application you then can just give its name--you will be prompted for any required parameters. Alternatively, you may enter parameter values on the command line specified by position or by keyword. More on this in Parameters

Commands are interpreted in a case-independent way from ICL, but from the shell they must be given in lowercase. In ICL, commands may also be abbreviated provided they are unambiguous strings with at least four characters. Commands shorter than five characters, therefore, cannot be shortened. So

     ICL> CREF
     ICL> crefr
     ICL> CreFra
     ICL> CREFRAM

would all run CREFRAME. Whereas

     ICL> FITS
     ICL> FITSI

would be ambiguous, since there are several commands beginning FITS, and two starting FITSI, namely FITSIN and FITSIMP.

Note if other packages are active there is the small possibility of a command-name clash. Issuing such a command will run that command in the package last activated. You can ensure running the KAPPA command by inserting a kap_ prefix before the command name. For example,

      % kap_rotate

will execute KAPPA's ROTATE application. There may also be a clash with UNIX commands and shell built-in functions, though there are now far fewer conflicts than in earlier versions of KAPPA, with only look being ambiguous. There is also a glob in the C-shell which might confuse you should you forget that GLOBALS cannot be abbreviated from the shell.

Since the KAPPA commands are the same in both the shell and ICL, the % and ICL> prompts in the examples and description in subsequent pages are interchangeable unless noted otherwise.