Ceng 334 - Operating Systems
... • This is done by locks • A lock is defined by a file name, the starting byte and the number of bytes • When placing a lock, the process specifies to – Block: when the existing block is removed, the process is unblocked and the lock is placed – Not to block: the system call returns with a status cod ...
... • This is done by locks • A lock is defined by a file name, the starting byte and the number of bytes • When placing a lock, the process specifies to – Block: when the existing block is removed, the process is unblocked and the lock is placed – Not to block: the system call returns with a status cod ...
09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To
... To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
... To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
Operating system components Operating system
... extend a project (rather than to duplicate code with minor variants) ...
... extend a project (rather than to duplicate code with minor variants) ...
Slides - Dr. Choong
... Silberschatz, Galvin, and Gagne, Operating Systems Concepts, Seventh Edition, John Wiley and Sons, 2005. ...
... Silberschatz, Galvin, and Gagne, Operating Systems Concepts, Seventh Edition, John Wiley and Sons, 2005. ...
Linux
... • The UNIX operating system was born in the late 1960s. It originally began as a one man project led by Ken Thompson of Bell Labs, and has since grown to become the most widely used operating system. • In the time since UNIX was first developed, it has gone through many different generations and eve ...
... • The UNIX operating system was born in the late 1960s. It originally began as a one man project led by Ken Thompson of Bell Labs, and has since grown to become the most widely used operating system. • In the time since UNIX was first developed, it has gone through many different generations and eve ...
Import Settings:
... 30. KDE and GNOME desktops are available under open-source licenses. 31. Many operating system merge I/O devices and files into a combined file because of the similarity of system calls for each. 32. An initial bootstrap program is in the form of random-access memory (RAM). 33. System calls can be r ...
... 30. KDE and GNOME desktops are available under open-source licenses. 31. Many operating system merge I/O devices and files into a combined file because of the similarity of system calls for each. 32. An initial bootstrap program is in the form of random-access memory (RAM). 33. System calls can be r ...
L03
... OS rotates its various jobs in and out of execution via time-sharing Each job gets a predetermined “time slice” At end of time slice current job is set aside and a new one starts By rapidly shuffling jobs, illusion of several jobs executing simultaneously is created ...
... OS rotates its various jobs in and out of execution via time-sharing Each job gets a predetermined “time slice” At end of time slice current job is set aside and a new one starts By rapidly shuffling jobs, illusion of several jobs executing simultaneously is created ...
UNIX Operating System
... different images that can be selected at boot time. LILO can be placed either in the master boot record (MBR) or the boot sector partition. In the latter case, something else like a reference must be placed in the MBR to load LILO. ...
... different images that can be selected at boot time. LILO can be placed either in the master boot record (MBR) or the boot sector partition. In the latter case, something else like a reference must be placed in the MBR to load LILO. ...
Operating-System Structures - Stanford Computer Graphics
... System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient. ...
... System goals – operating system should be easy to design, implement, and maintain, as well as flexible, reliable, error-free, and efficient. ...
Book cover slide
... • Demonstrate knowledge of basic GUI components • Compare and contrast file systems • Explain the organization of file system directories ...
... • Demonstrate knowledge of basic GUI components • Compare and contrast file systems • Explain the organization of file system directories ...
Lect03
... the OS rotates its various jobs in and out of execution via time-sharing o Each job gets a predetermined “time slice” o At end of time slice current job is set aside and a new one starts o By rapidly shuffling jobs, illusion of several jobs executing simultaneously is created ...
... the OS rotates its various jobs in and out of execution via time-sharing o Each job gets a predetermined “time slice” o At end of time slice current job is set aside and a new one starts o By rapidly shuffling jobs, illusion of several jobs executing simultaneously is created ...
Answers to Even-numbered Exercises
... 6. What is a utility program? A utility (program), sometimes referred to as a command, performs a task that is frequently related to the operating system. A utility is simpler than an application program, although there is no clear line separating the two. Linux distributions include many utilities. ...
... 6. What is a utility program? A utility (program), sometimes referred to as a command, performs a task that is frequently related to the operating system. A utility is simpler than an application program, although there is no clear line separating the two. Linux distributions include many utilities. ...
Unix hardware level
... •It is a machine independent operating system. Ken Thompson developed it in 1969 • Unix OS was written by programmer to programmer. It use C language to instead of the previously used assembly language •Time-sharing, multi-user, multi-tasking are basic designed in the system(Multiple users can have ...
... •It is a machine independent operating system. Ken Thompson developed it in 1969 • Unix OS was written by programmer to programmer. It use C language to instead of the previously used assembly language •Time-sharing, multi-user, multi-tasking are basic designed in the system(Multiple users can have ...
Unix Intro PowerPoint
... Korn Shell (ksh) - includes many extensions, such as a history feature that lets you use a keyboard shortcut to ...
... Korn Shell (ksh) - includes many extensions, such as a history feature that lets you use a keyboard shortcut to ...
CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE
... applications. The user has access to the libraries and to the applications. These two components are what many users think of as UNIX, because together they constitute the UNIX interface. The part of UNIX that manages the hardware and the executing processes is called the kernel. In managing all har ...
... applications. The user has access to the libraries and to the applications. These two components are what many users think of as UNIX, because together they constitute the UNIX interface. The part of UNIX that manages the hardware and the executing processes is called the kernel. In managing all har ...
CIT 500: IT Fundamentals
... 4. Explain system processes and their relationships, including booting and scheduling. 5. Automate common system administration tasks using shell scripts. ...
... 4. Explain system processes and their relationships, including booting and scheduling. 5. Automate common system administration tasks using shell scripts. ...
UNIX Operating System
... first starting with the target it is going to create. Make looks at each of the target’s dependencies to see if they are listed as targets. It follows the chain of dependencies until it reaches the end of the chain and then begins backing out and executing the commands found in each target's rule. A ...
... first starting with the target it is going to create. Make looks at each of the target’s dependencies to see if they are listed as targets. It follows the chain of dependencies until it reaches the end of the chain and then begins backing out and executing the commands found in each target's rule. A ...
Introduction to Operating Systems - Seneca
... It has become a standard on which many other operating systems are modelled We will be using a command-line interface to communicate with UNIX ...
... It has become a standard on which many other operating systems are modelled We will be using a command-line interface to communicate with UNIX ...
gst_115_9
... • Although both the operating systems are open source but UNIX is relatively closed one as compared to LINUX. ...
... • Although both the operating systems are open source but UNIX is relatively closed one as compared to LINUX. ...
Unix
Unix (all-caps UNIX for the trademark) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties from the late 1970s, leading to a variety of both academic and commercial variants of Unix from vendors such as the University of California, Berkeley (BSD), Microsoft (Xenix), IBM (AIX) and Sun Microsystems (Solaris). AT&T finally sold its rights in Unix to Novell in the early 1990s, which then sold its Unix business to the Santa Cruz Operation (SCO) in 1995, but the UNIX trademark passed to the industry standards consortium The Open Group, which allows the use of the mark for certified operating systems compliant with the Single UNIX Specification (SUS). Among these is Apple's OS X, which is the Unix version with the largest installed base as of 2014.From the power user's or programmer's perspective, Unix systems are characterized by a modular design that is sometimes called the ""Unix philosophy"", meaning that the operating system provides a set of simple tools that each perform a limited, well-defined function, with a unified filesystem as the main means of communication and a shell scripting and command language to combine the tools to perform complex workflows. Aside from the modular design, Unix also distinguishes itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language that allowed Unix to reach numerous platforms.Many clones of Unix have arisen over the years, of which Linux is the most popular, having overtaken the popularity of SUS-certified Unices on server platforms since its inception in the early 1990s.