What is the difference between SIGUSR1 and USR1… here is a solution to the problem.
What is the difference between SIGUSR1 and USR1
Is there any difference between SIGUSR1 and USR1 in terminating processes
ex
kill -SIGUSR1 {pid}
or
kill -USR1 {pid}
Solution
There is no difference (except for the number of characters you have to enter).
Quote for example https://man7.org/linux/man-pages/man1/kill.1@@procps-ng.html
Alternate signals may be specified in three ways:
-9
,-SIGKILL
or-KILL
.
Not all variations of man pages include this explanation.