Definitions for "Signal handler"
A function that executes when a signal is received by a shell script. Usually signal handlers clean up temporary files and then exit.
A routine that executes in response to a UNIX signal. A program may either call the user runtime function sigaction() to install a handler for a specific signal, or use the default handler in the user runtime. A program may want to take special action in response to a signal for a variety of reasons. For example, the kill utility sends the SIGTERM signal to the specified process to terminate it. Before terminating, a program may execute a signal handler to save data to files.
(noun) - Another name for a callback.
a section of code that will get called when the process recieves that particular signal