how to know cudnn version code example

Example 1: cudnn version linux

cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2orcat /usr/include/cudnn.h | grep CUDNN_MAJOR -A 2

Example 2: find cudnn version

cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2
#or :
cat /usr/include/cudnn.h | grep CUDNN_MAJOR -A 2