Signals: Interrupting Execution of R
Description
On receiving SIGUSR1 R will save the workspace and quit.
SIGUSR2 has the same result except that the .Last
function and on.exit expressions will not be called.Usage
kill -USR1 pid
kill -USR2 pid
Arguments
pid
The process ID of the R process.
Warning
It is possible that one or more R objects will be undergoing
modification at the time the signal is sent. These objects could be
saved in a corrupted form.Details
The commands history will also be saved if would be at normal
termination. This is not available on Windows, and possibly on other OSes which do
not support these signals.See Also
Sys.getpid to report the process ID for future use.