The Macintosh File System (continued)
... • Invisible type codes and creator codes • Files created with Apple’s SimpleText text editor have a type code of TEXT, and a creator code of ttxt • Mac files an contain two parts, or forks: – the data fork – the resource fork ...
... • Invisible type codes and creator codes • Files created with Apple’s SimpleText text editor have a type code of TEXT, and a creator code of ttxt • Mac files an contain two parts, or forks: – the data fork – the resource fork ...
Two general strategies for creating multiple threads
... Dynamically linked libraries: are system libraries that are linked to user programs when the programs are run. Some operating systems support only static linking: in which system libraries are treated like any other object module and are combined by the loader into the binary program image. Dyna ...
... Dynamically linked libraries: are system libraries that are linked to user programs when the programs are run. Some operating systems support only static linking: in which system libraries are treated like any other object module and are combined by the loader into the binary program image. Dyna ...
Slide Set 7
... Opens a specified file on a specified stream. Closes the file first, if it is already open. Most typically used with stdin, stdout, and stderr to open a file as one of these streams. ...
... Opens a specified file on a specified stream. Closes the file first, if it is already open. Most typically used with stdin, stdout, and stderr to open a file as one of these streams. ...
ppt
... – allocate memory space for programs – deallocate space when needed by rest of system – maintain mappings from physical to virtual memory ...
... – allocate memory space for programs – deallocate space when needed by rest of system – maintain mappings from physical to virtual memory ...
The Unix Philosophy
... to communicate with the computer system (both on a software and hardware basis). There are thousands of commands available. Many of these commands or "utilities" are available for the regular user. There are also commands that are available for the "super-user" for administering the OS. The Shell is ...
... to communicate with the computer system (both on a software and hardware basis). There are thousands of commands available. Many of these commands or "utilities" are available for the regular user. There are also commands that are available for the "super-user" for administering the OS. The Shell is ...
File-System
... information needed for remote computing In Windows CIFS (common internet file system), network information is used with user authentication to create a network login. A newer version is called active directory. One distributed LDAP (lightweight directory-access protocol) could be used by an orga ...
... information needed for remote computing In Windows CIFS (common internet file system), network information is used with user authentication to create a network login. A newer version is called active directory. One distributed LDAP (lightweight directory-access protocol) could be used by an orga ...
1.1 What is an Operating System?
... a fixed location. The fixed location usually contains the starting address where the service routine for the interrupt is located. The interrupt service routine transfers data from the local buffer of the device controller to main memory. Once this transfer is accomplished, the CPU can then resume t ...
... a fixed location. The fixed location usually contains the starting address where the service routine for the interrupt is located. The interrupt service routine transfers data from the local buffer of the device controller to main memory. Once this transfer is accomplished, the CPU can then resume t ...
Course\FOS\FOS Unit-1 2014
... proper use of these resources in the operation of the computer system. Like a government, the OS performs no useful function by itself. It simply provides an environment within which other programs can do useful work. We can view an OS as a resource allocator. A computer system has many resources (h ...
... proper use of these resources in the operation of the computer system. Like a government, the OS performs no useful function by itself. It simply provides an environment within which other programs can do useful work. We can view an OS as a resource allocator. A computer system has many resources (h ...
L03 - UMBC
... linux#[1]% _ where # is the number of the Linux server to which you have connected. You may use any of the Linux servers: linux1, linux2 or linux3. ...
... linux#[1]% _ where # is the number of the Linux server to which you have connected. You may use any of the Linux servers: linux1, linux2 or linux3. ...
ITED 328 Spring 2004
... Software failure in the operating system, or in one of the application programs. Or you get invaded by a worm / virus or other attack. ...
... Software failure in the operating system, or in one of the application programs. Or you get invaded by a worm / virus or other attack. ...
ch11.pdf
... The file system design deals with two distinct matters: 1. How should the file system look to the user. 2. Creating data structures and algorithms to map the logical file system onto the physical secondary storage device. ...
... The file system design deals with two distinct matters: 1. How should the file system look to the user. 2. Creating data structures and algorithms to map the logical file system onto the physical secondary storage device. ...
ppt
... programs is the same - only different in the details • “Cross-compilation” is defined as the compilation of a program on one computer (Sun development host) for execution on another computer (SAPC target machine) – We used gcc to generate an executable file that will run on the Sun-based UNIX system ...
... programs is the same - only different in the details • “Cross-compilation” is defined as the compilation of a program on one computer (Sun development host) for execution on another computer (SAPC target machine) – We used gcc to generate an executable file that will run on the Sun-based UNIX system ...
Chapter 10 PowerPoint
... • Direct Access: views a file as a numbered sequence of blocks that may be accessed in any order • Direct access can be extended to use an index to help find locations within a file, which can reduce access time for finding information in a large file. ...
... • Direct Access: views a file as a numbered sequence of blocks that may be accessed in any order • Direct access can be extended to use an index to help find locations within a file, which can reduce access time for finding information in a large file. ...
Chapter 4 (b) - Jhasudan.com.np
... ◦ These calls are generally available as assembly language instructions, and are usually listed in the manuals used by assembly language programmers. ◦ Some systems may allow system calls to be made directly from a high-level language program, in which case the calls normally resemble predefined fun ...
... ◦ These calls are generally available as assembly language instructions, and are usually listed in the manuals used by assembly language programmers. ◦ Some systems may allow system calls to be made directly from a high-level language program, in which case the calls normally resemble predefined fun ...
Interacting with a c..
... Executing a program through mouse clicks (cont.) • This is what is going on inside a computer when you (double) click on an icon that is associated with a computer program: 1. You double click on an icon 2. The Operating System detects the mouse clicks on the icon 3. The Operating System locates th ...
... Executing a program through mouse clicks (cont.) • This is what is going on inside a computer when you (double) click on an icon that is associated with a computer program: 1. You double click on an icon 2. The Operating System detects the mouse clicks on the icon 3. The Operating System locates th ...
What Is Operating System? Operating Systems, System Calls, and Buffered I/O
... close closes a file descriptor, so that it no longer refers to any file and may be reused. Any locks held on the file it was associated with, and owned by the process, are removed (regardless of the file descriptor that was used to obtain the lock) . . . . ...
... close closes a file descriptor, so that it no longer refers to any file and may be reused. Any locks held on the file it was associated with, and owned by the process, are removed (regardless of the file descriptor that was used to obtain the lock) . . . . ...
Nachos Overview - Computer and Information Science | Brooklyn
... consider how to share files under development among your group members. There is no single best way to do this. A possible option is to set up a user group in the Solaris system for your group, and by assigning proper access rights to your project files, you may allow only your group members to acce ...
... consider how to share files under development among your group members. There is no single best way to do this. A possible option is to set up a user group in the Solaris system for your group, and by assigning proper access rights to your project files, you may allow only your group members to acce ...
Upload Files to Servers. Case Study and Implementation
... Under Apache, we have the possibility to execute programs already compiled in C, Fortran and Java, under Unix machines we can directly execute Perl programs, and, most important, under all operating system platforms we can execute PHP programs if we previously install PHP language and module binarie ...
... Under Apache, we have the possibility to execute programs already compiled in C, Fortran and Java, under Unix machines we can directly execute Perl programs, and, most important, under all operating system platforms we can execute PHP programs if we previously install PHP language and module binarie ...
hand-out - Jan Thorbecke
... be done in any order. However, although the human brain may engage in parallel processing, the human student finds it impossible (and expensive) to work successfully with four copies of the same book simultaneously open to four different chapters. Given the necessity for a linear ordering, I think t ...
... be done in any order. However, although the human brain may engage in parallel processing, the human student finds it impossible (and expensive) to work successfully with four copies of the same book simultaneously open to four different chapters. Given the necessity for a linear ordering, I think t ...
Document
... concatenate the host name to the names of files stored on that host system-wide uniqueness guaranteed simple to located a file not location transparent or location independent ...
... concatenate the host name to the names of files stored on that host system-wide uniqueness guaranteed simple to located a file not location transparent or location independent ...
4 Operating System Activities
... An operating system is a type of system software that acts as the master controller for all activities that take place within a computer system ...
... An operating system is a type of system software that acts as the master controller for all activities that take place within a computer system ...
Slides - CSE
... – Any user process can modify the protection state at its discretion. – User processes can access and modify kernels through special file systems (e.g., /proc, /kmem.) – Any root user process can modify any aspect of the protection system ...
... – Any user process can modify the protection state at its discretion. – User processes can access and modify kernels through special file systems (e.g., /proc, /kmem.) – Any root user process can modify any aspect of the protection system ...
#9305 - Changing The Default Operating System with LILO
... #9305 - Changing The Default Operating System with LILO This document will describe how to change the default bootup operating system. After installing Corel® LINUX® onto its own partition, Linux is the default OS. By default, Corel LINUX will configure LILO (LInux LOader) to be the default OS that ...
... #9305 - Changing The Default Operating System with LILO This document will describe how to change the default bootup operating system. After installing Corel® LINUX® onto its own partition, Linux is the default OS. By default, Corel LINUX will configure LILO (LInux LOader) to be the default OS that ...
Linux Booting Procedure
... lock - Lock files. Used by a program to indicate it is using a particular device or file log - Log files from programs such as login and syslog which logs all logins and logouts. run - Files that contain information about the system that is valid until the system is next booted spool - Directories f ...
... lock - Lock files. Used by a program to indicate it is using a particular device or file log - Log files from programs such as login and syslog which logs all logins and logouts. run - Files that contain information about the system that is valid until the system is next booted spool - Directories f ...