Linux OS? Mac OSX
Essentially, your PC is attempting to run the application busybox
BusyBox is a software suite that provides several Unix utilities in a single executable file. It runs in a variety of POSIX environments such as Linux, Android, and FreeBSD, although many of the tools it provides are designed to work with interfaces provided by the Linux kernel. BusyBox, is available for Mac OSWikipedia
ArduinoIDE should be installed based on the platform install instructions: https://www.arduino.cc/en/software
PS: best in future to start new inquiry than to piggy-back on an old post.