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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 ]
A rule of thumb in determining if a reply fits into the 4xx or the 5xx (Permanent Negative) category is that replies are 4xx if the commands can be repeated without any change in command form or in properties of the User or Server (e.g., the command is spelled the same with the same arguments used; the user does not change his file access or ...
It includes all commands that are standardized by the Internet Engineering Task Force (IETF) in RFC 959, plus extensions. Note that most command-line FTP clients present their own non-standard set of commands to users. For example, GET is the common user command to download a file instead of the raw command RETR.
Many of these commands may be combined with ⇧ Shift to select a region of text. [13] [14] [notes 6] In macOS, holding ⌘ Command while dragging mouse can be used to invert selection, and holding ⌥ Option can be used to select by rectangular area in some apps. (These two functionalities may be combined).
Most modern Linux distributions documentation specify using kill-HUP <processID> to send the SIGHUP signal. [ 3 ] Daemon programs sometimes use SIGHUP as a signal to restart themselves, the most common reason for this being to re-read a configuration file that has been changed.
Foreman is targeted on Linux operating systems, but users reported successful installations on Microsoft Windows, BSD, and macOS. The core Foreman team maintains repositories for various Linux distributions: Fedora, Red Hat Enterprise Linux (and derivatives such as CentOS), Debian, and Ubuntu.
CrushFTP uses a GUI for administration, but also installs as a daemon on Mac OS X, Linux, Unix, and as a service in Windows. It supports multihoming, multiple websites with distinct branding, hot configuration changes, Attachment redirection, and GUI-based management of users and groups from a browser.
The Apache HTTP Server (/ ə ˈ p æ tʃ i / ə-PATCH-ee) is a free and open-source cross-platform web server, released under the terms of Apache License 2.0.It is developed and maintained by a community of developers under the auspices of the Apache Software Foundation.