The System Administrator and his responsibilities

1
The System Administrator and his responsibilities

• System Administration Spring 2006
• The system administrators job profile
• The role has changed
• Cooperate Intelligent
• Tight integration
• Strategic importance
• IT is a strategic asset
• Competitive weapon

2
The System Administrator and his responsibilities

• The name of the department has changed
• EDB
• Support
• Technical support
• System Administration
• IT-department
• IT-development
• IT system department

3
The System Administrator and his responsibilities

• Names of the persons
• Supporter
• System administrator
• Technical supporter
• Network technician

4
The System Administrator and his responsibilities

• Skills
• Technical skills
• Management skills
• Communication skills
• Contractual/Juridical skills
• Economical skills

5
The System Administrator and his responsibilities

• How
• Plan before you do it
• Make it reversible
• Make changes reversible
• Test, test, test before you do it
• Know how things really work

6
The System Administrator and his responsibilities

• Communicate

7
The System Administrator and his responsibilities

• Becoming Superuser
• su
• su root -c kill -9 2424
• sudo find . name la -print
• who
• users
• ps -ef

8
The System Administrator and his responsibilities

• write kofod
• Here is some text
• d
• talk
• wall
• We close the system in 30 min.
• d

9
The System Administrator and his responsibilities

• Files Ownership
• ls l
• -rwxr-xr-x 1 root system 120 Mar 12 0930
  bronze
• -rrr-- 2 kofod fun 89 Feb 12 2120 gold
• R View file content
• W Alter file
• X Execute file

10
The System Administrator and his responsibilities

• Files Ownership
• chmod gw kofod
• ugo
• User Group Other
• a
• All

11
The System Administrator and his responsibilities

• Files Ownership
• chmod 774 kofod
• chmod 554 kofod

12
The System Administrator and his responsibilities

• Files Ownership
• umask
• 777 754 023
• More look at Table 2-4 page 35

13
The System Administrator and his responsibilities

• File types
• - Plain file
• d Directory
• l Symbolic link
• b Block special file
• c Character special file
• s Socket
• p Named pipe

14
The System Administrator and his responsibilities

• Exercise
• Create a file system for storing you MP3 music.
• What are the UMASK value in your system?
• Change the bootloader file, so you have 20
  seconds to choose which operating system you want
  to boot from