Accessing the Operating System
This chapter discusses the methods for communicating with the operating system from PV-WAVE. The main topics include:
Manipulating environment variables (UNIX/Windows) Using SPAWN to access the operating system Changing the current directory The utility routines used to communicate with specific operating systems are summarized in Table 1-1: Routines for Accessing the Operating System:
Method | UNIX | Win | Use |
|---|---|---|---|
SPAWN | Yes | Yes | Lets you spawn a child process to execute commands. The output generated by the commands can be captured in a variable for later processing by PV-WAVE. |
GETENV, SETENV, ENVIRONMENT | Yes | Yes | Manipulate environment variables. |
SET_SYMBOL, GET_SYMBOL, DELETE_SYMBOL | No | No | Manipulate DCL interpreter symbols. |
CD, PUSHD, POPD, PRINTD | Yes | Yes | Let you change the current working directory. |
