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I am looking for the R equivalent of linux/POSIX exit(n) which will halt the process with exit code n, signaling to a parent process that an error had occurred. Does R have such a facility?
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A non-zero exit status indicates failure. This seemingly counter-intuitive scheme is used so there is one well-defined way to indicate success and a variety of ways to indicate various failure modes. When a command terminates on a fatal signal whose number is N , Bash uses the value 128+ N as the exit status.
To quit R you can either use the RStudio > Quit pull-down menu command or execute ⌘ + Q (OS X) or ctrl + Q (PC).
It's an argument to quit(). See ?quit.
Arguments:
status: the (numerical) error status to be returned to the operating system, where relevant. Conventionally ‘0’ indicates successful completion. Details:
Some error statuses are used by R itself. The default error handler for non-interactive use effectively calls ‘q("no", 1, FALSE)’ and returns error code 1. Error status 2 is used for R ‘suicide’, that is a catastrophic failure, and other small numbers are used by specific ports for initialization failures. It is recommended that users choose statuses of 10 or more. If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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