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A task (i.e., a synonym for thread) is the minimal entity that Linux can schedule. However, it can also manage groups of threads, whole multi-threaded processes, and even all the processes of a given user. This design leads to the concept of schedulable entities, where tasks are grouped and managed by the scheduler as a whole.
Default runlevels are typically 3, 4, or 5. Lower runlevels are useful for maintenance or emergency repairs, since they usually offer no network services at all. The particular details of runlevel configuration differ widely among operating systems, and also among system administrators.
[5] [6] [7] Ubuntu MATE — uses the MATE desktop environment as its default user interface, forked from the now-defunct GNOME 2 code base, with an emphasis on the desktop metaphor. [8] Ubuntu Server — An official derivative made for use in servers. Ubuntu Server handles mail, controls printers, acts as a fileserver, can host LAMP and more. [9]
On newer kernels (since 2.6.12 [7]), it is possible to have more fine-grained control over how the magic SysRq key can be used. [8] On these machines, the number written to /proc/sys/kernel/sysrq can be 0, 1, or a number greater than 1 which is a bitmask indicating which features to allow.
The cron command-line utility is a job scheduler on Unix-like operating systems.Users who set up and maintain software environments use cron to schedule jobs [1] (commands or shell scripts), also known as cron jobs, [2] [3] to run periodically at fixed times, dates, or intervals. [4]
Old Ask Ubuntu logo used until sometime in 2021. Ask Ubuntu came into existence as a "Proposed Q&A site for Ubuntu users and developers" on the Stack Exchange Area 51. [7] [8] With other Internet users supporting the proposal of the site through "commitment", Stack Exchange chose to launch Ask Ubuntu in private beta.
Snap is a software packaging and deployment system developed by Canonical for operating systems that use the Linux kernel and the systemd init system. The packages, called snaps, and the tool for using them, snapd, work across a range of Linux distributions [3] and allow upstream software developers to distribute their applications directly to users.
sudo (/ s uː d uː / [4]) is a program for Unix-like computer operating systems that enables users to run programs with the security privileges of another user, by default the superuser. [5] It originally stood for "superuser do", [ 6 ] as that was all it did, and this remains its most common usage; [ 7 ] however, the official Sudo project ...