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16. Process Management and Communication

Gathering Output from a Program

Running Another Program
Replacing the Current Program with a Different One
Reading or Writing to Another Program
Filtering Your Own Output
Preprocessing Input
Reading STDERR from a Program
Controlling Input and Output of Another Program
Controlling the Input, Output, and Error of Another Program
Communicating Between Related Processes
Making a Process Look Like a File with Named Pipes
Sharing Variables in Different Processes
Listing Available Signals
Sending a Signal
Installing a Signal Handler
Temporarily Overriding a Signal Handler
Writing a Signal Handler
Catching Ctrl-C
Avoiding Zombie Processes
Blocking Signals
Timing Out an Operation
Program: sigrand
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