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The magic SysRq key is a key combination understood by the Linux kernel, which allows the user to perform various low-level commands regardless of the system's state. It is often used to recover from freezes , or to reboot a computer without corrupting the filesystem . [ 1 ]
Controls buffering for commands that use stdio stty: Changes and prints terminal line settings tee: Sends output to multiple files test: Evaluates an expression timeout: Run a command with a time limit true: Does nothing, but exits successfully tty: Prints terminal name uname: Prints system information unlink: Removes the specified file using ...
libvirt is an open-source API, daemon and management tool for managing platform virtualization. [3] It can be used to manage KVM , Xen , VMware ESXi , QEMU and other virtualization technologies. These APIs are widely used in the orchestration layer of hypervisors in the development of a cloud-based solution.
Virt-manager allows users to: create, edit, start and stop VMs; view and control each VM's console; see performance and utilization statistics for each VM; view all running VMs and hosts, and their live performance or resource utilization statistics. use KVM, Xen or QEMU virtual machines, running either locally or remotely. use LXC containers
Through the "rules engine daemon" that can automatically move processes of certain users, groups, or commands to cgroups as specified in its configuration. Indirectly through other software that uses cgroups, such as Docker, Firejail, LXC, [19] libvirt, systemd, Open Grid Scheduler/Grid Engine, [20] and Google's developmentally defunct lmctfy.
Set the options for a terminal Version 2 AT&T UNIX tabs: Misc Mandatory Set terminal tabs PWB UNIX tail: Text processing Mandatory Copy the last part of a file PWB UNIX [citation needed] talk: Misc Optional (UP) Talk to another user 4.2BSD tee: Shell programming Mandatory Duplicate the standard output: Version 5 AT&T UNIX test: Shell ...
The Unix and Linux access rights flags setuid and setgid (short for set user identity and set group identity) [1] allow users to run an executable with the file system permissions of the executable's owner or group respectively and to change behaviour in directories. They are often used to allow users on a computer system to run programs with ...
Single-user mode, booted to system console only, with only root filesystem mounted (as read-only) s: Single-user mode, identical to S except the current terminal acts as the system console 1: Single-user mode with local filesystems mounted (read-write) 2: Multi-user mode with most daemons started and Common Desktop Environment launched 3