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Introduction to Linux

Introduction to Linux. Prepared by: Dr. Bahjat Qazzaz. DOS. DOS: Disk Operating System:(Floppy disk ) The disk is put into the drive then you boot, The OS is launched (loaded) to the main memory DOS features: single task: Only one program is executed at the same time

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Introduction to Linux

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  1. Introduction to Linux Prepared by: Dr. BahjatQazzaz

  2. DOS • DOS: Disk Operating System:(Floppy disk) • The disk is put into the drive then you boot, • The OS is launched (loaded) to the main memory • DOS features: • single task: Only one program is executed at the same time • text mode: NO GUI, all the commands are entered to a command line.

  3. Case study • My friends 386-computer • That was in 1994 • The RAM was 360KB, 1MB, • Hard disk 8 Mbytes, • CPU speed 33MHz, with turbo 66MHz • Price around $3500

  4. OS • Multitasking • Concurrently • Simultaneously

  5. OS Functions • GUI • MFC, JAVA, C-sharp بيسوى عمل مثال على ال MFC • Security • File management • Handling interrupts • Memory management • Scheduling processes (Programs), Queue • etc......

  6. Computer resources • Computing power, • memory (Buffer), • bandwidth, • storage system.

  7. Concepts • C Language and Portability • File C -->Source-->object-->executable • Linux=gcc, unix=cc, Mac=Xcode

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