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Although Linux enabled NCQ around 2007, it did not enable SATA/NCQ FUA until 2012, citing lack of support in the early drives. [16] [17] Firefox 3.0, released in 2008, introduced fsync system calls that were found to degrade its performance; the call was introduced in order to guarantee the integrity of the embedded SQLite database. [18]
If a file is linked, F2FS may loose its parent inode number so that fsync calls for the linked file need to perform the checkpoint every time. But, if the pino can be recovered after the checkpoint, roll-forward mechanism for the further fsync calls can be adjusted, which improves the fsync performance significantly. 3.11: N/A
The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. [3] They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the ...
vi (pronounced as distinct letters, / ˌ v iː ˈ aɪ / ⓘ) [1] is a screen-oriented text editor originally created for the Unix operating system. The portable subset of the behavior of vi and programs based on it, and the ex editor language supported within these programs, is described by (and thus standardized by) the Single Unix Specification and POSIX.
Vim (/ v ɪ m / ⓘ; [5] vi improved) is a free and open-source, screen-based text editor program. It is an improved clone of Bill Joy 's vi . Vim's author, Bram Moolenaar , derived Vim from a port of the Stevie editor for Amiga [ 6 ] and released a version to the public in 1991.
An ephemeral port is a communications endpoint of a transport layer protocol of the Internet protocol suite that is used for only a short period of time for the duration of a communication session. Such short-lived ports are allocated automatically within a predefined range of port numbers by the IP stack software of a computer operating system.
Port knocking is a flexible, customisable system add-in. If the administrator chooses to link a knock sequence to an activity such as running a shell script, other changes such as implementing additional firewall rules to open ports for specific IP addresses can easily be incorporated into the script. Simultaneous sessions are easily accommodated.
In addition to the BSDs, a few Linux distributions have implemented similar infrastructure, including Gentoo's Portage, Arch's Arch Build System (ABS), CRUX's Ports and Void Linux's Templates. The main advantage of the ports system when compared with a binary distribution model is that the installation can be tuned and optimized according to ...