Linux – What is the difference between SIGUSR1 and USR1

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.

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