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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]
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.
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.
CUPS was initially called "The Common UNIX Printing System". This name was shortened to just "CUPS" beginning with CUPS 1.4 due to legal concerns with the UNIX trademark. [7] CUPS was quickly adopted as the default printing system for most Linux distributions. In March 2002, Apple Inc. adopted CUPS as the printing system for Mac OS X 10.2. [8]
In order for a project schedule to be healthy, the following criteria must be met: [7] The schedule must be constantly updated (weekly works best). The EAC (Estimation at Completion) value must be equal to the baseline value. The remaining effort must be appropriately distributed among team members (taking vacations into consideration).
The total float represents the schedule flexibility and can also be measured by subtracting early start dates from late start dates of path completion. [ 3 ] [ 2 ] : 502 [ 1 ] : 183 Float is core to critical path method , with the total floats of noncritical activities key to computing the critical path drag of an activity, i.e., the amount of ...