The Yohkoh OS and IDL environment is established through the execution of several Unix script (or VMS command) files and IDL startup files. A single script acts to control the flow of script and setup execution. In some cases, multiple versions of scripts may exist in a general, site, and personal areas to allow customization according to the following execution order.
Type Path Function 1) GEN $ys/gen/setup setup default Yohkoh environment 2) SITE $ys/site/setup allow site modifications to the above 3) PERS $HOME allow personal modifications to the above
The files described below are used to configure the Yohkoh environment. Files for which a SITE version is maintained may be used by the site Yohkoh Software manager to customize the site environment. If no site version currently exists, the corresponding file from gen ($ys/gen/setup) may be used as an example or template (ie, copy to $ys/site/setup and edit). Note that files in SITE are not overwritten by a Yohkoh Software upgrade so site changes are not clobbered (unless requested).
File Function GEN SITE PERS idl_setup control flow of setup execution yes no no setup_paths set top level database locations yes(1) yes no setup_dirs define specific database paths yes yes no setup_alias define OS symbols / aliases yes yes no setup_mail define mailing list env yes yes no setup_ysenv other env/alias customization yes yes yes IDL_STARTUP define Yohkoh IDL environment yes yes(2) yes(3)