Tcl and the Tk Toolkit, Second Edition

45. Operating System Utilities

Tcl provides a variety of functions to deal with underlying operating system services. This layer is platform-independent, except where it makes sense to give the user access to lower-level options that may not be present on all platforms.

45.1 Functions Presented in This Chapter

This chapter discusses the following functions for accessing operating system services:

• Tcl_Channel Tcl_OpenCommandChannel(Tcl_Interp *interp,             int argc, CONST char *argv, int flags)

Opens a command channel using argv as the command and its arguments.

• Tcl_DetachPids(int numPids, int *pidPtr)

Gives Tcl responsibility for numPids child processes that are passed in via the pidPtr array.

• Tcl_ReapDetachedProcs()

Invokes the ...