Vibrant Technologies offers a Linux administration course to help students make a career in systems administration. The course covers topics such as administering systems, monitoring performance, installing software, and backup and recovery. It also discusses the roles of system administrators and the hierarchy of privileges on Linux systems, including the use of the superuser account and sudo command.

1. Vibrant Technologies
& Computers
LinUx administRatiOn COURsE
Make Career With Us!!
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2. linuxadmincoursetraining.vibranttechnologies.co.in
Systems Administration
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Administering the system?
Keep the system up in a consistent state
Monitor performance
Babysit users, make changes on their behalf
Install, configure, upgrade, maintain
Backup, restore, disaster recovery
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
enquiry@vibrantgroup.co.in

3. linuxadmincoursetraining.vibranttechnologies.co.in
Sysadmins
• System administration handled by various people
– Full time dedicated sysadmins on site
– Remote services
– Generic ‘IT’ personnel
– That user that seems to know what they’re doing
• Can be a skill set central to a career path, or a
means to an end
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
enquiry@vibrantgroup.co.in

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Privilege Hierarchy
• Want to divide system privilege by account
• First step is file level permissions
– Default permissions limit end users in what
configuration files they can read and which programs
they can run
• Next level is within system programs
– Limit certain functions to only users with ‘elevated’
privileges
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
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The Superuser
• By default, one account has elevated privileges to
issue any command, access any file, and perform
every function
• Superuser, a.k.a. root
– Technically, can change to anything – but don’t
• User and group number 0
B2/6/2 Vashi ,Navi Mumbai,
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The Superuser, cont
• Must limit use of root
– Inexperienced users can cause serious harm
– Use of root for non-privileged tasks unnecessary and
can be open to attack
– Security and privacy violations – root can look at
anyone’s files
• Limit what root can do remotely
• Ensure a strong password
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
enquiry@vibrantgroup.co.in

7. linuxadmincoursetraining.vibranttechnologies.co.in
sudo
• Allows you to issue a single command as another
user
• Syntax:
sudo [options] [-u user] command
• Again, if no user specified, root assumed
• New shell opened with user’s privileges
• Specified command executed
• Shell exited Mumbai,
B2/6/2 Vashi ,Navi
Contact:09892900103/9892900173
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Understanding Operating Systems
• Software
– Collection of instructions that control the tasks
a computer performs
– Can be changed without disassembling the
computer and rewiring
• Operating system
– Software that helps other programs control
computer hardware and interact with users
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
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9. linuxadmincoursetraining.vibranttechnologies.co.in
Understanding Operating
Systems (continued)
• Application
– Software program that provides service for
computer user
– Cannot act without “permission” from
operating system
B2/6/2 Vashi ,Navi Mumbai,
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linuxadmincoursetraining.vibranttechnologies.co.in
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Operating System Functions
• Initialize computer hardware
• Allocate system resources to programs
• Keep track of multiple programs running at
same time
• Provide organized method for all programs
to use system devices
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
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11. linuxadmincoursetraining.vibranttechnologies.co.in
Operating System Functions
(continued)
• Major operating system components:
– Kernel
– Device drivers
– Shell
– Utility programs
– Graphical user interface (GUI)
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
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12. linuxadmincoursetraining.vibranttechnologies.co.in
The UNIX Operating System
• UNIX
– Operating system
– Originally created at AT&T Bell Labs in
early 1970s
– Designed to control networked computers that
were shared by many users
– Features and low cost of Linux effectively
driving UNIX out of market
B2/6/2 Vashi ,Navi Mumbai,
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The Free Software Foundation
and the GNU Project
• Free software foundation (FSF)
– Software itself should not be restricted in
distribution by standard commercial license
agreement
• GNU project
– Completely free version of UNIX
– Written from scratch
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
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14. linuxadmincoursetraining.vibranttechnologies.co.in
Where to Get More Information
Vibrant Group:
www.vibrantgroup.co.in
Vibrant Technologies & Computers
www.vibranttechnologies.co.in/technologies.vibrantgroup.co.
in
Vibrant HR Team
www.hr.vibrangroup.co.in
B2/6/2 Vashi ,Navi Mumbai,
Contact:09892900103/9892900173
linuxadmincoursetraining.vibranttechnologies.co.in
enquiry@vibrantgroup.co.in