How can I compare all files in two directories and copy the ones that are different to another directory? For example, say we have dir1 and dir2:
dir1:
build.gradle
gradle.properties
somejar.jar
javacode.java
anotherjar.jar
dir2:
build.gradle <-- different from build.gradle in dir1
gradle.properties
somejar.jar
javacode.java <-- different from javacode.java in dir1
yetanotherjar.jar
How may I create a new directory dir3 that contains the different files from dir2, the common files in dir1 and dir2 and all uncommon files in both dir1 and dir2? dir3 should contain:
dir3:
build.gradle <-- from dir2
gradle.properties <-- these are common files both in dir1 and dir2
somejar.jar <--
javacode.java <-- from dir2
anotherjar.jar <-- from dir1
yetanotherjar.jar <-- from dir2