new file:   ex1/Makefile
new file:   ex1/ex1
new file:   ex2/Makefile
new file:   ex3/Makefile
new file:   ex4/Makefile
new file:   ex5/MATE_DESKTOP_SESSION_ID=this-is-deprecated
new file:   ex5/Makefile
	new file:   ex5/ex5
new file:   ex7/Makefile
	new file:   ex7/ex7
	new file:   ex7/ex7.c
	deleted:    ex5/MATE_DESKTOP_SESSION_ID=this-is-deprecated