RH302 – RHCE (Redhat Certified Engineer)

Reference / correct answer:

1. rpm –ivh ftp://server1.example.com/pub/zsh-*

2. Package will install

rpm command is used to install, update and remove the package, -i means install, -v means verbose and -h means display the hash mark.

Reference / correct answer:

1. visudo

# User alias Specification

User_alias LIMITEDTRUST=peter

# Cmnd alias Specification

Cmnd_alias MINIMUM=/usr/sbin/useradd, /usr/bin/passwd, /usr/sbin/groupadd, /usr/sbin/userdel, /usr/sbin/groupdel, /usr/sbin/usermod

# User Privilege Specification

LIMITEDTRUST ALL=MINIMUM

2. Login as peter user and run sudo useradd username

Using Sudo we can give root level privilege on commands. Visudo is the sudo editor. In user alias Specification we create the user alias and in Cmnd alias Specification, we create the command alias. In User Privilege Specification section, list the users, groups allowed to use the sudo.

Reference / correct answer:

1. vi /etc/security/limits.conf

user1 hard nproc 7

2. vi /etc/pam.d/system-auth

session required /lib/security/pam_limits.so

To limit the number of process or number of logins, we should configure on /etc/security/limits.conf. First Columns contains the username separated by comma or @group name. Second column either hard or soft limits. Third columns called the item, maxloigns or nproc etc.

To identify the session of users we should call the pam_limits module in /etc/pam.d/system-auth.