Operating Systems 2015F: Assignment 2 - Revision history

Soma: /* Solutions */

2015-10-03T19:09:49Z

Solutions

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	* The size of a file as seen by a program accessing that file.		* The size of a file as seen by a program accessing that file.

	'''NONE''' (Not gramatically correct, "du" or "ls -s" returns the space consumed by a file		'''NONE''' (Not gramatically correct, "du" or "ls -s" returns the space consumed by a file)
	* The size of the disk space consumed by a file.		* The size of the disk space consumed by a file.

Soma: /* Solutions */

2015-10-03T19:09:27Z

Solutions

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	'''logical size of a file'''		'''logical size of a file'''
	T* he size of a file as seen by a program accessing that file.		* The size of a file as seen by a program accessing that file.

	'''NONE''' (Not gramatically correct, "du" or "ls -s" returns the space consumed by a file		'''NONE''' (Not gramatically correct, "du" or "ls -s" returns the space consumed by a file

Soma: /* Solutions */

2015-10-03T19:08:41Z

Solutions

← Older revision		Revision as of 19:08, 3 October 2015
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	* A UNIX device abstraction that is primarily used for persistent storage devices.		* A UNIX device abstraction that is primarily used for persistent storage devices.

	'''NONE'''		'''NONE''' (lie detector?!)
	* A device for determining how trustworthy a person is.		* A device for determining how trustworthy a person is.

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	* If you have to interact with this program, files may have been corrupted.		* If you have to interact with this program, files may have been corrupted.

	'''NONE'''		'''NONE''' (normally /root, on older systems /)
	* The home directory of the root user.		* The home directory of the root user.

	'''root user'''		'''root user'''
	T* he user account on a UNIX system with the highest level of privileges.		* The user account on a UNIX system with the highest level of privileges.

	'''NONE'''		'''NONE''' (???)
	* The default configuration of a user account on a UNIX system.		* The default configuration of a user account on a UNIX system.

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	* The block that stores metadata about a filesystem needed to properly mount it.		* The block that stores metadata about a filesystem needed to properly mount it.

	'''NONE'''		'''NONE''' (No one block stores most of the data in a file unless it is a small file, then it can be squeezed into the inode)
	* The block that stores most of the data in a file.		* The block that stores most of the data in a file.

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	T* he size of a file as seen by a program accessing that file.		T* he size of a file as seen by a program accessing that file.

	'''NONE'''		'''NONE''' (Not gramatically correct, "du" or "ls -s" returns the space consumed by a file
	* The size of the disk space consumed by a file.		* The size of the disk space consumed by a file.

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	* A command for listing the modules loaded into the kernel.		* A command for listing the modules loaded into the kernel.

	'''NONE'''		'''NONE''' (ls -lt \| head)
	* A command that lists the recently modified files in a directory.		* A command that lists the recently modified files in a directory.

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	* Command that unloads a module from the currently running kernel.		* Command that unloads a module from the currently running kernel.

	'''NONE'''		'''NONE''' (You'd have to use a combination of find and rm.)
	* Command to delete recently modified files in the current directory.		* Command to delete recently modified files in the current directory.

Soma: /* Solutions */

2015-10-03T19:04:20Z

Solutions

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	device driver		'''device driver'''
	* Code that runs in the kernel and abstracts access to a specific piece of hardware.		* Code that runs in the kernel and abstracts access to a specific piece of hardware.

	kernel module		'''kernel module'''
	* Code that is loaded into to the kernel at runtime in order to add (or change) kernel functionality.		* Code that is loaded into to the kernel at runtime in order to add (or change) kernel functionality.

	character device		'''character device'''
	* A UNIX device abstraction that allows byte-level access to hardware (input and/or output). It is often used today to represent keyboards, mice, and printers.		* A UNIX device abstraction that allows byte-level access to hardware (input and/or output). It is often used today to represent keyboards, mice, and printers.

	block device		'''block device'''
	* A UNIX device abstraction that is primarily used for persistent storage devices.		* A UNIX device abstraction that is primarily used for persistent storage devices.

	NONE		'''NONE'''
	* A device for determining how trustworthy a person is.		* A device for determining how trustworthy a person is.

	make		'''make'''
	* A program that directs the compilation of other programs.		* A program that directs the compilation of other programs.

	root filesystem		'''root filesystem'''
	* A set of files and directories that must exist on every UNIX system.		* A set of files and directories that must exist on every UNIX system.

	fsck		'''fsck'''
	* If you have to interact with this program, files may have been corrupted.		* If you have to interact with this program, files may have been corrupted.

	NONE		'''NONE'''
	* The home directory of the root user.		* The home directory of the root user.

	root user		'''root user'''
	T* he user account on a UNIX system with the highest level of privileges.		T* he user account on a UNIX system with the highest level of privileges.

	NONE		'''NONE'''
	* The default configuration of a user account on a UNIX system.		* The default configuration of a user account on a UNIX system.

	superblock		'''superblock'''
	* The block that stores metadata about a filesystem needed to properly mount it.		* The block that stores metadata about a filesystem needed to properly mount it.

	NONE		'''NONE'''
	* The block that stores most of the data in a file.		* The block that stores most of the data in a file.

	inode		'''inode'''
	* An on-disk data structure that stores file metadata including length, modification times, and ownership information.		* An on-disk data structure that stores file metadata including length, modification times, and ownership information.

	extents		'''extents'''
	* Sequential ranges of blocks used to store file data.		* Sequential ranges of blocks used to store file data.

	logical size of a file		'''logical size of a file'''
	T* he size of a file as seen by a program accessing that file.		T* he size of a file as seen by a program accessing that file.

	NONE		'''NONE'''
	* The size of the disk space consumed by a file.		* The size of the disk space consumed by a file.

	kernel oops		'''kernel oops'''
	* Happens when the kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from.		* Happens when the kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from.

	pseudo tty		'''pseudo tty'''
	* A UNIX device that virtualizes keyboard input and text output.		* A UNIX device that virtualizes keyboard input and text output.

	/proc		'''/proc'''
	* A virtual filesystem that allows access to kernel state in mostly human-readable formats.		* A virtual filesystem that allows access to kernel state in mostly human-readable formats.

	/sys		'''/sys'''
	* A virtual filesystem that allows access to kernel state where every file stores exactly one value.		* A virtual filesystem that allows access to kernel state where every file stores exactly one value.

	/dev		'''/dev'''
	* The part of the filesystem normally used to give names to connected hardware.		* The part of the filesystem normally used to give names to connected hardware.

	mount		'''mount'''
	* Command to make the contents of a filesystem accessible.		* Command to make the contents of a filesystem accessible.

	lsmod		'''lsmod'''
	* A command for listing the modules loaded into the kernel.		* A command for listing the modules loaded into the kernel.

	NONE		'''NONE'''
	* A command that lists the recently modified files in a directory.		* A command that lists the recently modified files in a directory.

	rmmod		'''rmmod'''
	* Command that unloads a module from the currently running kernel.		* Command that unloads a module from the currently running kernel.

	NONE		'''NONE'''
	* Command to delete recently modified files in the current directory.		* Command to delete recently modified files in the current directory.

Soma: /* Solutions */

2015-10-03T19:03:02Z

Solutions

← Older revision		Revision as of 19:03, 3 October 2015
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	==Solutions==		==Solutions==

	* device driver
	~~Code that runs in the kernel and abstracts access to a specific piece of hardware.~~

	* ~~kernel module~~		device driver
	Code that ~~is loaded into to~~ the kernel ~~at runtime in order~~ to ~~add (or change) kernel functionality~~.		* Code that runs in the kernel and abstracts access to a specific piece of hardware.

	* ~~character device~~		kernel module
	~~A UNIX device abstraction~~ that ~~allows byte-level access~~ to ~~hardware~~ (~~input and/~~or ~~output~~)~~. It is often used today to represent keyboards, mice, and printers~~.		* Code that is loaded into to the kernel at runtime in order to add (or change) kernel functionality.

	* block device		character device
	A UNIX device abstraction that is ~~primarily~~ used ~~for persistent storage devices~~.		* A UNIX device abstraction that allows byte-level access to hardware (input and/or output). It is often used today to represent keyboards, mice, and printers.

	* ~~NONE~~		block device
	A device for ~~determining how trustworthy a person is~~.		* A UNIX device abstraction that is primarily used for persistent storage devices.

	* ~~make~~		NONE
	A ~~program that directs the compilation of other programs~~.		* A device for determining how trustworthy a person is.

	* ~~root filesystem~~		make
	A ~~set~~ of ~~files and directories that must exist on every UNIX system~~.		* A program that directs the compilation of other programs.

	* ~~fsck~~		root filesystem
	~~If you have to interact with this program,~~ files ~~may have been corrupted~~.		* A set of files and directories that must exist on every UNIX system.

	* ~~NONE~~		fsck
	~~The home directory of the root user~~.		* If you have to interact with this program, files may have been corrupted.

	* root user		NONE
	~~The user account on a UNIX system with the highest level of privileges~~.		* The home directory of the root user.

	* ~~NONE~~		root user
	~~The default configuration of a~~ user account on a UNIX system.		T* he user account on a UNIX system with the highest level of privileges.

	* ~~superblock~~		NONE
	The ~~block that stores metadata about~~ a ~~filesystem needed to properly mount it~~.		* The default configuration of a user account on a UNIX system.

	* ~~NONE~~		superblock
	The block that stores ~~most of the data in~~ a ~~file~~.		* The block that stores metadata about a filesystem needed to properly mount it.

	* ~~inode~~		NONE
	~~An on-disk data structure~~ that stores file ~~metadata including length, modification times, and ownership information~~.		* The block that stores most of the data in a file.

	* ~~extents~~		inode
	~~Sequential ranges of blocks used to store~~ file ~~data~~.		* An on-disk data structure that stores file metadata including length, modification times, and ownership information.

	* ~~logical size~~ of ~~a file~~		extents
	~~The size of a file as seen by a program accessing that~~ file.		* Sequential ranges of blocks used to store file data.

	* ~~NONE~~		logical size of a file
	~~The~~ size of ~~the disk space consumed~~ by a file.		T* he size of a file as seen by a program accessing that file.

	* ~~kernel oops~~		NONE
	~~Happens when~~ the ~~kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from~~.		* The size of the disk space consumed by a file.

	* ~~pseudo tty~~		kernel oops
	~~A UNIX device~~ that ~~virtualizes keyboard input and text output~~.		* Happens when the kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from.

	* ~~/proc~~		pseudo tty
	A ~~virtual filesystem~~ that ~~allows access to kernel state in mostly human-readable formats~~.		* A UNIX device that virtualizes keyboard input and text output.

	* /~~sys~~		/proc
	A virtual filesystem that allows access to kernel state ~~where every file stores exactly one value~~.		* A virtual filesystem that allows access to kernel state in mostly human-readable formats.

	* /~~dev~~		/sys
	~~The part of the~~ filesystem ~~normally used to give names~~ to ~~connected hardware~~.		* A virtual filesystem that allows access to kernel state where every file stores exactly one value.

	* ~~mount~~		/dev
	~~Command to make~~ the ~~contents of a~~ filesystem ~~accessible~~.		* The part of the filesystem normally used to give names to connected hardware.

	* ~~lsmod~~		mount
	~~A command for listing the modules loaded into~~ the ~~kernel~~.		* Command to make the contents of a filesystem accessible.

	* ~~NONE~~		lsmod
	A command ~~that lists~~ the ~~recently modified files in a directory~~.		* A command for listing the modules loaded into the kernel.

	* ~~rmmod~~		NONE
	~~Command~~ that ~~unloads~~ a ~~module from the currently running kernel~~.		* A command that lists the recently modified files in a directory.

	* NONE		rmmod
	Command to delete recently modified files in the current directory.		* Command that unloads a module from the currently running kernel.

			NONE
			* Command to delete recently modified files in the current directory.

Soma at 19:01, 3 October 2015

2015-10-03T19:01:27Z

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	<li>The user account on a UNIX system with the highest level of privileges.		<li>The user account on a UNIX system with the highest level of privileges.
	</ol>		</ol>

			==Solutions==

			* device driver
			Code that runs in the kernel and abstracts access to a specific piece of hardware.

			* kernel module
			Code that is loaded into to the kernel at runtime in order to add (or change) kernel functionality.

			* character device
			A UNIX device abstraction that allows byte-level access to hardware (input and/or output). It is often used today to represent keyboards, mice, and printers.

			* block device
			A UNIX device abstraction that is primarily used for persistent storage devices.

			* NONE
			A device for determining how trustworthy a person is.

			* make
			A program that directs the compilation of other programs.

			* root filesystem
			A set of files and directories that must exist on every UNIX system.

			* fsck
			If you have to interact with this program, files may have been corrupted.

			* NONE
			The home directory of the root user.

			* root user
			The user account on a UNIX system with the highest level of privileges.

			* NONE
			The default configuration of a user account on a UNIX system.

			* superblock
			The block that stores metadata about a filesystem needed to properly mount it.

			* NONE
			The block that stores most of the data in a file.

			* inode
			An on-disk data structure that stores file metadata including length, modification times, and ownership information.

			* extents
			Sequential ranges of blocks used to store file data.

			* logical size of a file
			The size of a file as seen by a program accessing that file.

			* NONE
			The size of the disk space consumed by a file.

			* kernel oops
			Happens when the kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from.

			* pseudo tty
			A UNIX device that virtualizes keyboard input and text output.

			* /proc
			A virtual filesystem that allows access to kernel state in mostly human-readable formats.

			* /sys
			A virtual filesystem that allows access to kernel state where every file stores exactly one value.

			* /dev
			The part of the filesystem normally used to give names to connected hardware.

			* mount
			Command to make the contents of a filesystem accessible.

			* lsmod
			A command for listing the modules loaded into the kernel.

			* NONE
			A command that lists the recently modified files in a directory.

			* rmmod
			Command that unloads a module from the currently running kernel.

			* NONE
			Command to delete recently modified files in the current directory.

Soma at 00:18, 30 September 2015

2015-09-30T00:18:35Z

← Older revision		Revision as of 00:18, 30 September 2015
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	# mount		# mount
	# lsmod		# lsmod
	# rmmod
			(<tt>rmmod</tt> was on the list but it didn't get added to the quiz unfortunately.)

	'''Definitions:'''		'''Definitions:'''

Soma at 03:06, 29 September 2015

2015-09-29T03:06:15Z

← Older revision		Revision as of 03:06, 29 September 2015
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	~~'''~~This assignment is ~~not yet finalized~~.~~'''~~		This assignment is due by 11:59 PM on Wednesday, September 30, 2015 on cuLearn.

	Choose the appropriate definition for the following terms:		Choose the appropriate definition for the following terms:
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	'''Definitions:'''		'''Definitions:'''

	<ol>		<ol style="list-style-type:upper-alpha">
	<li>If you have to interact with this program, files may have been corrupted.		<li>If you have to interact with this program, files may have been corrupted.
	<li>Command to delete recently modified files in the current directory.		<li>Command to delete recently modified files in the current directory.

Soma at 03:04, 29 September 2015

2015-09-29T03:04:23Z

← Older revision		Revision as of 03:04, 29 September 2015
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	# lsmod		# lsmod
	# rmmod		# rmmod

			'''Definitions:'''

			<ol>
			<li>If you have to interact with this program, files may have been corrupted.
			<li>Command to delete recently modified files in the current directory.
			<li>The size of the disk space consumed by a file.
			<li>Sequential ranges of blocks used to store file data.
			<li>Code that runs in the kernel and abstracts access to a specific piece of hardware.
			<li>A UNIX device abstraction that is primarily used for persistent storage devices.
			<li>The block that stores most of the data in a file.
			<li>A set of files and directories that must exist on every UNIX system.
			<li>The default configuration of a user account on a UNIX system.
			<li>The block that stores metadata about a filesystem needed to properly mount it.
			<li>An on-disk data structure that stores file metadata including length, modification times, and ownership information.
			<li>A virtual filesystem that allows access to kernel state where every file stores exactly one value.
			<li>Code that is loaded into to the kernel at runtime in order to add (or change) kernel functionality.
			<li>A device for determining how trustworthy a person is.
			<li>The home directory of the root user.
			<li>Happens when the kernel detects an internal error, such as access to an illegal memory location, that can generally be recovered from.
			<li>A UNIX device that virtualizes keyboard input and text output.
			<li>A command for listing the modules loaded into the kernel.
			<li>Command to make the contents of a filesystem accessible.
			<li>The size of a file as seen by a program accessing that file.
			<li>A command that lists the recently modified files in a directory.
			<li>A UNIX device abstraction that allows byte-level access to hardware (input and/or output). It is often used today to represent keyboards, mice, and printers.
			<li>Command that unloads a module from the currently running kernel.
			<li>The part of the filesystem normally used to give names to connected hardware.
			<li>A program that directs the compilation of other programs.
			<li>A virtual filesystem that allows access to kernel state in mostly human-readable formats.
			<li>The user account on a UNIX system with the highest level of privileges.
			</ol>

Soma: Created page with "'''This assignment is not yet finalized.''' Choose the appropriate definition for the following terms: # device driver # kernel module # character device # block device # ma..."

2015-09-23T14:47:06Z

Created page with "'''This assignment is not yet finalized.''' Choose the appropriate definition for the following terms: # device driver # kernel module # character device # block device # ma..."

New page

'''This assignment is not yet finalized.'''

Choose the appropriate definition for the following terms:

# device driver
# kernel module
# character device
# block device
# make
# root filesystem
# fsck
# root user
# superblock
# inode
# extents
# logical size of a file
# kernel oops
# pseudo tty
# /proc
# /sys
# /dev
# mount
# lsmod
# rmmod