The values of the parameters in the IEASYMxx.ini, IEASYSxx.ini , LNKLSTxx.ini, LPALSTxx.ini and PROGxx.ini files may contain symbolic expressions. Symbolic expressions consist of characters which are not substituted and symbol references which are substituted. Symbolic references start with an ampersand (&) and are followed by the symbol name. Symbolic references may be terminated by a period in order to separate them from subsequent characters in the value.
Symbolic references may be substring references, in which case the symbol name is followed by the starting position and length in parentheses. For example, &SYSNAME(2:3) with be evaluated to the second, third and fourth characters of the &SYSNAME symbol’s value. If the length is omitted, it will default to 1. The starting position may be a negative value, in which case the starting position is counted from the right. For example, &SYSNAME(-2:2) will be evaluated to the last two characters of the &SYSNAME symbol’s value.
SYMDEF statements in IEASYMxx.ini files may be
used to define symbols. In addition, the Tachyon Operating System defines
the following system symbols:
| System Symbol Name | Description |
|---|---|
| &JOBNAME | Set to #MASTER#. |
| &SYSCLONE | Set by the SYSDEF SYSCLONE parameter in an IEASYMxx.ini file. If not explicitly set, it is the last two characters of &SYSNAME. |
| &SYSNAME | Set by the SYSDEF SYSNAME parameter in an IEASYMxx.ini file. |
| &SYSPLEX | Set by the SYSPLEX parameter in the LOADxx.ini file. |
| &SYSR1 | Set to SYSRES. |
| &YYMMDD and &LYYMMDD |
Set to the UCT and local date in YYMMDD format, respectively. These and all other dates and times are for the time that the Tachyon Operating System was started. |
| &HHMMSS and &LHHMMSS |
Set to the UCT and local time in HHMMSS format, respectively. |
| &YR4 and &LYR4 | Set to the UCT and local 4-digit year, respectively. |
| &YR2 and &LYR2 | Set to the UCT and local 2-digit year, respectively |
| &MON and &LMON | Set to the UCT and local 2-digit month number, respectively. |
| &DAY and &LDAY | Set to the UCT and local 2-digit day of the month, respectively. |
| &JDAY and &LJDAY | Set to the UCT and local 3-digit day of the year, respectively. |
| &WDAY and &LWDAY | Set to the UCT and local 3-character day of the week, respectively. The possible values are: SUN, MON, TUE, WED, THU, FRI and SAT. |
| &HR and &LHR | Set to the UCT and local 2-digit hour, respectively. |
| &MIN and &LMIN | Set to the UCT and local 2-digit minute, respectively. |
| &SEC and &LSEC | Set to the UCT and local 2-digit second, respectively. |