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The CI provides predefined variables, giving the user access to system information. The names and default values are preset in the session variable table. The following list categorizes the type of system information available and some of the predefined variables that access it. (A listing of commonly used predefined variables is provided in Appendix A. Refer to the
MPE/iX Commands Reference Manual
(32650-90003) for a listing of all predefined variables available.) - Directory information
HPACCOUNT, HPGROUP, HPUSER, HPCWD - User's capabilities
HPUSERCAP, HPUSERCAPF, HPACCTCAP, HPGROUPCAP - User's environment
HPREDOSIZE, HPPATH, HPPROMPT, HPERRDUMP, HPTYPEAHEAD, HPPIN, HPFILE - Input/output specifications
HPLDEVIN, HPINTERACTIVE, HPSTDLIST - Error handling information
CIERROR, JCW, HPCIERRMSG, HPMSGFENCE, HPCIERR, HPFSERR - Job information
HPJOBFENCE, HPSESLIMIT, HPJOBTYPE, HPJOBNAME - System configuration information
HPCONSOLE, HPCPUNAME, HPSYSNAME - System date and time
HPDATE, HPDATEF, HPTIMEF, HPYEAR
Displaying Values | |
A list of all variables and their current values can be displayed with the SHOWVAR command followed by the wildcard character @. Both predefined variables and any user-defined variables in the session table are displayed. As with user-defined variables, the current value of specific predefined variables can be displayed using the SHOWVAR command and the variable name. In the following example, the HPREDOSIZE,
HPPATH,HPCWD, and HPPROMPT variables are displayed.
:SHOWVAR HPPROMPT
HPPROMPT = :
:SHOWVAR HPPATH, HPREDOSIZE
HPPATH = !HPGROUP,PUB,PUB.SYS
HPREDOSIZE = 20
:SHOWVAR HPCWD
HPCWD = /SK72NM/PUB/somehfsdir
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In this last example, /SK72NM/PUB is an /ACCOUNT/GROUP path (in
hierarchical file system) that corresponds to an MPE/iX GROUP.ACCOUNT, and
somehfsdir is a directory (below PUB). Modifying Values | |
No predefined variables can be deleted by the user, however, some of them are modifiable. (Refer to the
MPE/iX Commands Reference Manual
(32650-90003) for a list of predefined variables that cannot be modified.) You can change the default setting of any modifiable predefined variable to better suit your needs. The following example alters the CI prompt and the size of the command history stack using the SETVAR command.
:SHOWVAR HPPROMPT
HPPROMPT = :
:SETVAR HPPROMPT "==>"
==>
:SHOWVAR HPREDOSIZE
HPREDOSIZE = 20
:SETVAR HPREDOSIZE 25
:SHOWVAR HPREDOSIZE
HPREDOSIZE = 25
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