Checks if the shell escape function is used in the code. An exclamation point (!) indicates that the rest of the line is a command to the operating system. This is called a shell escape. As an alternative, you can use the MATLAB-installed function system. If your coding standards dictate that no system calls should be used, configure checkAvoidFunctions such that use of the system function is reported in addition to the shell escape function.

Exemption tag: %@ok<SHESC>