Linux training-course-navi-mumbai-linux-course-provider-navi-mumbai

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B2/6/2 Vashi ,Navi Mumbai, Contact:09892900103/9892900173 enquiry@vibrantgroup.co.in
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Linux training-course-navi-mumbai-linux-course-provider-navi-mumbai

  1. 1. Vibrant Technologies & Computers Linux administration COURSE Make Career With Us!! B2/6/2 Vashi ,Navi Mumbai, Contact:09892900103/9892900173
  2. 2. linuxadmincoursetraining.vibranttechnologies.co.in Systems Administration • • • • • • 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. 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
  4. 4. linuxadmincoursetraining.vibranttechnologies.co.in 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 enquiry@vibrantgroup.co.in
  5. 5. linuxadmincoursetraining.vibranttechnologies.co.in 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, Contact:09892900103/9892900173 linuxadmincoursetraining.vibranttechnologies.co.in enquiry@vibrantgroup.co.in
  6. 6. linuxadmincoursetraining.vibranttechnologies.co.in 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. 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 linuxadmincoursetraining.vibranttechnologies.co.in enquiry@vibrantgroup.co.in
  8. 8. linuxadmincoursetraining.vibranttechnologies.co.in 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 enquiry@vibrantgroup.co.in
  9. 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, Contact:09892900103/9892900173 linuxadmincoursetraining.vibranttechnologies.co.in enquiry@vibrantgroup.co.in
  10. 10. linuxadmincoursetraining.vibranttechnologies.co.in 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 enquiry@vibrantgroup.co.in
  11. 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 enquiry@vibrantgroup.co.in
  12. 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, Contact:09892900103/9892900173 linuxadmincoursetraining.vibranttechnologies.co.in enquiry@vibrantgroup.co.in
  13. 13. linuxadmincoursetraining.vibranttechnologies.co.in 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 enquiry@vibrantgroup.co.in
  14. 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

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