How to count differences between two files on linux?

How to count differences between two files on linux?

shell count diff

shell

Counting all .class files

linux bash shell count

shell

How to count number of files and subdirectories with shellscript?

file shell count

shell

Compare two files and display the count of duplicates occurences of a string

bash shell count

shell

alternative for command line "sort | uniq -c | sort -n"

perl shell sorting awk count

shell