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In Linux, processes do not always run smoothly — unexpected errors, system interruptions, or hardware failures can occur at any time. Properly handling these exceptions is essential to maintaining system stability and ensuring that processes can respond appropriately to changes.
One of the key mechanisms Linux provides for managing unexpected events is signal processing. Signals act as notifications or interrupts sent to processes, allowing them to handle events such as user interruptions, segmentation faults, or system shutdowns.
Linux Signals
A signal in Linux is a software-generated asynchronous event used to notify a process about certain occurrences. These signals can be triggered by various system events, user commands, or other processes.
There are some common signals, I’ve listed them in the following table:
These signals help Linux processes respond to critical events by either executing predefined actions or custom handlers.
