Simply put, a Shell Script is a program that is run by a UNIX/Linux shell. It is a file that contains a series of commands which are executed sequentially as if they were entered on the command line ...
RTLinux is a hard real-time OS, as opposed to soft real-time systems or those that make no scheduling guarantees whatsoever. RTLinux is a hard real-time kernel that runs Linux or BSD as an idle task, ...
Linux offers control, security, and freedom, but its learning curve, software, and hardware issues may challenge some users.