1 / 14

The LINUX Operating System

The LINUX Operating System. By Cathy Thiaw ID # 89261 COSC 513 Lecturer: M. Anvari SEU ‘99 Summer Term. Plan. What’s Linux? Linux Features Resource Management Processes Security Comparison with other OS. What’s Linux?.

tiana
Download Presentation

The LINUX Operating System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The LINUX Operating System • By Cathy Thiaw • ID # 89261 • COSC 513 Lecturer: M. Anvari • SEU ‘99 Summer Term

  2. Plan • What’s Linux? • Linux Features • Resource Management • Processes • Security • Comparison with other OS

  3. What’s Linux? • an OS initially created by Linus Torvalds (Finland) and a team working over the Internet; • developed from MINIX, a small Unix system; • An open and free operating system, adaptable to meet individuals needs;

  4. Linux Features • Multitasking • Virtual memory • Shared libraries • Multi_users capabilities • X-windows systems • Run most Unix programs

  5. Linux Features • Advanced networking capabilities: LAN or WAN setting, different types of protocols, fast TCP/IP drivers • Support for Macintosh, Windows, NT, Novell, OS/2 • Server or Client

  6. Resource Management • Use of semaphores • 1 process at a time can access to some resource • The semaphore data structure includes a count of number of processes that wish to use a resource, a waking parameter (number of processes waiting to be woken up), and a wait queue.

  7. Processes on Linux • Interprocess-communications: Unix -liked mechanisms of signals, pipes and semaphores, shared memory... • Relationships parent / child process • Most process has virtual memory

  8. Processes on Linux • Max number of processes in the system: 512 • State process: • *running • *waiting: interruptible or uninterruptible • -*stopped • *zombie: dead process

  9. Security • Security on Linux is comparable with most Unix system • Security tools : firewalls, packets filtering, encryption, kerberos… are available • Monitoring (logs) and audit of logon activities, resource utilization …available

  10. Comparison with other OS • Windows NT • BSDI • Solaris 7.0

  11. Runnable foreign libraries: -Linux2.2: Windows 3.*‑98 Mac (Executor), SCO and some other Intel based SysV's(iBCS) NT4: MAC(Executor),dos, windows 3.1/W32 BSDI: DOS, support for Linux in development Solaris: Macintosh,Windows 3.1 Network Inter-operability

  12. Network and Inter-operability • Mountable filesystems • Linux 2.2: FAT, FS read-only,HPFS read-only (OS/2), iso9660 (CDROM), minix, NTFS (read-only), HFS (MacOS)… • NT4: FAT, NTFS, iso9660 • BSDI: iso9660 • Solaris: UFS, FAT (dos, windows),UFS, iso9660…

  13. OS Convenience • Bug fix and other updates: • Linux2.2.: Freely download able • NT4: not free • BSDI: Some minor, updates/bugfixes can be downloaded freely. • Solaris7.0: not free

  14. References • http://www.zinezone.com/zines/digital/software/linux/index.html • http://metalab.unc.edu/mdw/LDP/tlk/tlk.html • http://www.aie.nl/software_doc/tlk‑html/node45.html • http://www.ecst.csuchico.edu/~jtmurphy/Keep_safe_info.html • http://www.linuxhq.com/HOWTO/Security‑HOWTO‑9.html

More Related