Paging
In paging the physical address space of a process is non-contiguous. Paging is implemented using frames and pages.
Memory Management
Memory management is one of the most important functions of an operating system. The working of a computer system majorly depends on two components: Memory and CPU
Practice Quiz – Operating System
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How to change file permissions using chmod command in Linux?
chmod command in linux is used to change existing permissions of files/directories. chmod [OPTION]… MODE… FILE… . e.g. $chmod u+x file.txt
How to use groupdel command in Linux?
groupdel command is used to delete all entries related to a group in the system. The named group must exist. Syntax: groupdel [options] GROUP
How to use groupmod command in linux?
groupmod command in linux is used to modify the information related to any existing group. Syntax groupmod [options] GROUP
How to use groupadd command in Linux?
groupadd command in linux is used to create a new group. groupadd [Options] group. The list of existing groups in the system is available in /etc/group file
How to use usermod command in Linux?
usermod command in linux is used to modify an existing user’s account information. Only the super user can use this command.
How to use userdel command in linux?
userdel command in linux is used to delete an existing user and related files. Only the super user can use this command.
How to create users using useradd command in Linux?
useradd command is used to add a new user in the system. In other words it is used to create a new login account for a different user. useradd command can be used only by the root user.