Summary

In this chapter, we have examined the basic procedures for managing users and groups on a Solaris system. Since all processes and threads are executed with a real or effective user and group ID, it s important for administrators to understand how to manage these entities effectively.

Questions

1.	What are the typical uses for a Solaris user account (choose two only)? Spawning a shell Connecting networks together Performing hardware maintenance Scheduling applications to run on specific times and dates
2.	Which of the following groups contains only default system accounts? root, daemon, bin, sys, lp, adm, www root, samba, bin, sys, lp, adm, uucp root, daemon, bin, sys, lp, adm, uucp oracle, daemon, bin, sys, lp, adm, uucp
3.	What are the names of the two password files used by Solaris? /etc/passwd , /etc/secure /etc/password , /etc/secure /bin/passwd , /etc/group /etc/passwd , /etc/shadow
4.	Which of the following users has a default UID of 0? bin root sys adm
5.	Which of the following useradd commands is valid? useradd -u abc -g 10 -d /home/abc “m “k/etc/skel “s /bin/sh “c "ABC" abc useradd -u 1023 -g abc -d /home/abc “m “k/etc/skel “s /bin/sh “c "ABC" abc useradd -u 1023 -g 10 -d /home/abc “m “k/etc/skel “s /bin/sh “c "ABC" abc useradd -u abc -g abc -d /home/abc “m “k/etc/skel “s /bin/sh “c "ABC" abc
6.	Which of the following usermod commands would change the UID of the www account from 1004 to 1005? usermod -u 1005 www usermod -u 1004 -n 1005 www usermod www “n 1005 usermod www 1004 1004
7.	A locked account can be identified in /etc/passwd by which of the following entries? *LOCKED* LOCKED *LK* *
8.	Which of the following userdel commands would delete account melissa (UID 1002)? userdel -r melissa userdel -u 1002 userdel -uid melissa userdel -r 1002
9.	Which of the following groupadd commands is valid? groupadd “g 100 staff groupadd “g 100 -s staff groupadd staff -gid 100 groupadd “g staff 100
10.	Which of the following characteristics cannot explicitly be set using admintool? The primary group The login shell An expiry date for the user s account File permissions for the home directory

Answers

1.	A or D. Most users log in with a shell and use it to launch applications.
2.	C. www, samba, and oracle are common accounts on Solaris, but they are user-installed.
3.	D. The passwd file doesn t contain passwords anymore, but retains all user details.
4.	B. The root user has a default UID of 0, but this can be modified.
5.	C. UIDs and GIDs must be numeric.
6.	A. Only the UID needs to be identified with the “u parameter.
7.	C. *LK* indicates a locked account.
8.	D. UIDs must be used when deleting accounts.
9.	A. UIDs must be used when adding groups.
10.	D. admintool can be used to set the primary group, login shell, and an expiry date, but cannot perform normal shell tasks .