1.	Adaugarea
	a. sudo su - root
	b. adduser test
	c. usermod -aG sudo test

2.  Schimbarea de parola
	a. cd /usr/bin
	b. sudo chmod u-s passwd
	c. PASSWD
	passwd: Authentication token manipulation error
	passwd: password unchanged

3.  Capabilitati
	a. setcap + cap_chown + cap_dac_override + cap_fowner
	b. setcap cap_chown,cap_dac_override,cap_fowner+ep /usr/bin/passwd
		+ Conform articolului https://github.com/tsgates/arch-wiki-markdown/blob/master/wiki/Using_File_Capabilities_Instead_Of_Setuid.md

4.  Comanda Shadow - conform articolului si testat.
	# chmod u-s /usr/bin/chage
	# setcap cap_dac_read_search+ep /usr/bin/chage

	# chmod u-s /usr/bin/chfn
	# setcap cap_chown,cap_setuid+ep /usr/bin/chfn

	# chmod u-s /usr/bin/chsh
	# setcap cap_chown,cap_setuid+ep /usr/bin/chsh

	# chmod u-s /usr/bin/expiry
	# setcap cap_dac_override,cap_setgid+ep /usr/bin/expiry

	# chmod u-s /usr/bin/gpasswd
	# setcap cap_chown,cap_dac_override,cap_setuid+ep /usr/bin/gpasswd

	# chmod u-s /usr/bin/newgrp
	# setcap cap_dac_override,cap_setgid+ep /usr/bin/newgrp

	# chmod u-s /usr/bin/passwd
	# setcap cap_chown,cap_dac_override,cap_fowner+ep /usr/bin/passwd