And look at this.
Congratulations.
The end of another module and one more module on your
way to being CompTIA Linux+ certified.
You really should be proud of yourself and just take a moment to
appreciate what you've been through. Here we've looked at user management,
so managing users, but concentrating on local users.
We also introduced the fact that we do have identity vaults. Inside of
our identity vault, we might have Active Directory storing users or open
LDAP servers storing our user information.
We also looked at managing our passwords and, of course,
that introduced the passwd command.
But additionally, we're looking at other tools that we could noninteractively
change our passwords, such as the chpasswd command. The chage command can be
used to change some of our aging information.
The password though itself was made up of an algorithm
and a salt, which is clear text.
This is random text that we can use then to combine along with
our password to create the one‑way hash that actually makes up
what we see as the encrypted password.
Finally, we looked at not just managing our users,
but looking at managing our groups.
So the groupout and the groupdel command and seeing how
we have different types of groups.
The primary group, which is associated with our users in the
/etc/passwd file and then the /etc/group file where we have our
secondary and complementary group membership.
Secondary and complementary groups are often then just terms that
are referring to our normal group membership.
Next up, we're going to be taking a look at how we can start
managing and implementing an Apache webserver using HTTPs, so
looking at ways that we can have secure and safe communication through to our web server.