ArrayContains returns true if str is an element of array.

ArrayContainsPrefix returns true if str is prefixed with any element of array.

FilePathExists returns true if path exists, false if non-existent.

KernelVersionInt takes a kernel version as a string and returns the integer value */.

PrettyString formats v as a string for logging purposes.

RemoveFromArray returns array without the element rem if it is present.