In computer programming, an exit code is a numeric value returned by a program or script to indicate the status of its execution. Exit codes are typically used to communicate the success or failure of a program, or to provide additional information about the nature of any errors that may have occurred.Exit codes can be used for various purposes, such as controlling the flow of execution in a script, debugging programs, and automating tasks based on the outcome of a program.
Checking exit codes is an important aspect of programming as it allows you to determine whether a program or script has executed successfully or not, and to take appropriate actions based on the result. Exit codes can also provide valuable information for debugging purposes, as they can indicate the specific error or issue that caused a program to fail.Historically, exit codes have been used in various operating systems and programming languages, providing a standardized way to communicate the status of a program’s execution.