slides
... meta-data updates For example, file creation must modify an i-node and a directory entry Initialize the i-node Record the mapping in the
directory
...
... meta-data updates For example, file creation must modify an i-node and a directory entry Initialize the i-node Record the
Comparing and Contrasting Windows and Linux Forensics Zlatko
... physical structure of hard drive are listed in /dev directory (p. 254). Linux hard drive structure consists of: Inodes, Superblock, Data block, and Dentry (Nelson, p. 134) File management system for two OS’s is different. Windows could have FAT (with its variations) or NTFS file system, while Linux ...
... physical structure of hard drive are listed in /dev directory (p. 254). Linux hard drive structure consists of: Inodes, Superblock, Data block, and Dentry (Nelson, p. 134) File management system for two OS’s is different. Windows could have FAT (with its variations) or NTFS file system, while Linux ...
Chapter 14: The User View of Operating Systems 0
... • More interest in concepts than in specific commands 1. Purpose of the User Interface • Not to interact with the O/S per se, but to help use the system productively • (common look and feel) reduce user’s learning curve. o Move is toward using web browsers as this look and feel. • Provide a variety ...
... • More interest in concepts than in specific commands 1. Purpose of the User Interface • Not to interact with the O/S per se, but to help use the system productively • (common look and feel) reduce user’s learning curve. o Move is toward using web browsers as this look and feel. • Provide a variety ...
SimpleDB Overview - Massachusetts Institute of Technology
... • Because you haven’t implemented insertTuple, you have no way to create data files ...
... • Because you haven’t implemented insertTuple, you have no way to create data files ...
CSc 352: Systems Programming & Unix
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files) and services (e.g., multiprogramming) ...
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files) and services (e.g., multiprogramming) ...
CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE
... There are two types of devices in UNIX- block-oriented devices which transfer data in blocks and character – oriented devices that transfer data on a byte-by – byte basis. ii.Links: A link is a pointer to another file. There are two types of links – ahard link to a file is indistinguishable from the ...
... There are two types of devices in UNIX- block-oriented devices which transfer data in blocks and character – oriented devices that transfer data on a byte-by – byte basis. ii.Links: A link is a pointer to another file. There are two types of links – ahard link to a file is indistinguishable from the ...
Linux Kernel—File Systems
... contains pointers to functions that can be used to act on any file An open file descriptor contains pointer to functions which can only ...
... contains pointers to functions that can be used to act on any file An open file descriptor contains pointer to functions which can only ...
Operating Systems I: Programming Tools
... Implementation is concise and elegant, code is easy to read (descriptively named variables, all lines less than 80 columns, etc.), extremely well documented, all possible errors handled and demonstrated in typescript. Generally excellent work. ...
... Implementation is concise and elegant, code is easy to read (descriptively named variables, all lines less than 80 columns, etc.), extremely well documented, all possible errors handled and demonstrated in typescript. Generally excellent work. ...
Chapter Two User Operating System interface
... different shells, including the Bourne shell, C shell, BourneAgain shell, Korn shell, and others. Third-party shells and free user-written shells are also available. Most shells provide similar functionality, and a user's choice of which shell to use is generally based on personal preference. Figure ...
... different shells, including the Bourne shell, C shell, BourneAgain shell, Korn shell, and others. Third-party shells and free user-written shells are also available. Most shells provide similar functionality, and a user's choice of which shell to use is generally based on personal preference. Figure ...
int_unix - Pablo Manalastas, PhD
... Online help: man command info command whereis command apropos command ...
... Online help: man command info command whereis command apropos command ...
FileSystems
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
Computer Backup Demo
... Windows program – $29, but free in Google toolbar bundle(?) 7-Zip (from Tucows, from FileHippo) Windows & command-line program, current, free ...
... Windows program – $29, but free in Google toolbar bundle(?) 7-Zip (from Tucows, from FileHippo) Windows & command-line program, current, free ...
Files and Directories
... – Inefficient for tiny files (a 1 byte file requires both an inode and a data block) – Inefficient encoding when file is mostly contiguous on disk (no equivalent to superpages) – Need to reserve 10-20% of free space to prevent ...
... – Inefficient for tiny files (a 1 byte file requires both an inode and a data block) – Inefficient encoding when file is mostly contiguous on disk (no equivalent to superpages) – Need to reserve 10-20% of free space to prevent ...
Basic Unix - University of Arizona
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files, processes) and services (e.g., multiprogramming) ...
... • Unix is an operating system – sits between the hardware and the user/applications – provides high-level abstractions (e.g., files, processes) and services (e.g., multiprogramming) ...
Xerox PARCTAB
... • ISR performs some minimal processing and returns interrupt id to kernel • ISH re-enables all but this interrupt, uses the interrupt id to signal an event on which a IST of a native driver is waiting (Event Object). • IST may need to perform some hardware specific actions to process interrupt • IST ...
... • ISR performs some minimal processing and returns interrupt id to kernel • ISH re-enables all but this interrupt, uses the interrupt id to signal an event on which a IST of a native driver is waiting (Event Object). • IST may need to perform some hardware specific actions to process interrupt • IST ...
In this example there is a link to Assignments in...
... In this example there is a link to Assignments in the left navigation menu. Some courses may also have Assignments listed as part of Course Content or a Learning Module. ...
... In this example there is a link to Assignments in the left navigation menu. Some courses may also have Assignments listed as part of Course Content or a Learning Module. ...
OSPP: File Systems
... – Inefficient for tiny files (a 1 byte file requires both an inode and a data block) – Inefficient encoding when file is mostly contiguous on disk (no equivalent to superpages) – Need to reserve 10-20% of free space to prevent ...
... – Inefficient for tiny files (a 1 byte file requires both an inode and a data block) – Inefficient encoding when file is mostly contiguous on disk (no equivalent to superpages) – Need to reserve 10-20% of free space to prevent ...
MODUL 11 Designing Databases(2)
... – A restricted database updates or deletes a key only if there are no matching child records – A cascaded database will delete or update all child records when a parent record is deleted or changed ...
... – A restricted database updates or deletes a key only if there are no matching child records – A cascaded database will delete or update all child records when a parent record is deleted or changed ...
Linux - the most important … Linux: SHELL ~$ command –options
... When your system boots, it reads a list of mounting instructions in the file /etc/fstab, which describes which device is mounted at which mount point in the directory tree. This takes care of the hard drives, but you may also have devices that are considered temporary, such as CD-ROMs, thumb drives, ...
... When your system boots, it reads a list of mounting instructions in the file /etc/fstab, which describes which device is mounted at which mount point in the directory tree. This takes care of the hard drives, but you may also have devices that are considered temporary, such as CD-ROMs, thumb drives, ...
MBG404_LS_02
... Open it in notepad Search for runClass (name of the file without .class) The part ‘mbg404/’ in front of the first ‘runClass’ entry, you find, is the package (folder/directory) it must be in so you are able to run the class • Create a folder mbg404 ...
... Open it in notepad Search for runClass (name of the file without .class) The part ‘mbg404/’ in front of the first ‘runClass’ entry, you find, is the package (folder/directory) it must be in so you are able to run the class • Create a folder mbg404 ...
Directories
... Do a ls -l /proc, and you’ll see lot of directories with just numbers. These numbers represents the process ids, the files inside this numbered directory correspond to the process with that particular PID Following are some file located in proc directory as • cmdline – command line of the command. ...
... Do a ls -l /proc, and you’ll see lot of directories with just numbers. These numbers represents the process ids, the files inside this numbered directory correspond to the process with that particular PID Following are some file located in proc directory as • cmdline – command line of the command. ...
Computer file
A computer file is a resource for storing information, which is available to a computer program and is usually based on some kind of durable storage. A file is ""durable"" in the sense that it remains available for other programs to use after the program that created it has finished executing. Computer files can be considered as the modern counterpart of paper documents which traditionally are kept in office and library files, and this is the source of the term.