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Instead of a conventional, unnamed, shell pipeline, a named pipeline makes use of the filesystem.It is explicitly created using mkfifo() [1] or mknod(), [2] and two separate processes can access the pipe by name — one process can open it as a reader, and the other as a writer.
Cisco's implementation of traceroute also uses a sequence of UDP datagrams, each with incrementing TTL values, to an invalid port number at the remote host; by default, UDP port 33434 is used. An extended version of this command (known as the extended traceroute command) can change the destination port number used by the UDP probe messages. [13]
SSH is typically used to log into a remote computer's shell or command-line interface (CLI) and to execute commands on a remote server. It also supports mechanisms for tunneling , forwarding of TCP ports and X11 connections and it can be used to transfer files using the associated SSH File Transfer Protocol (SFTP) or Secure Copy Protocol (SCP).
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 2025. Family of Unix-like operating systems This article is about the family of operating systems. For the kernel, see Linux kernel. For other uses, see Linux (disambiguation). Operating system Linux Tux the penguin, the mascot of Linux Developer Community contributors, Linus Torvalds Written in ...
In computer networking, localhost is a hostname that refers to the current computer used to access it. The name localhost is reserved for loopback purposes. [1] It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware.
The number that follows the name of a command, interface, or other feature specifies the section (i.e. the type of the OS' component or feature) it belongs to. For example execve(2) refers to a system call, and exec(3) refers to a userspace library wrapper. The following is an overview of architectural design and of noteworthy features.
A single space separates a command from its argument, and a space, or newline, separates each argument from the next MUMPS token. Commands which take no arguments (e.g., ELSE) require two following spaces. The concept is that one space separates the command from the (nonexistent) argument, the next separates the "argument" from the next command.
This differentiates an inland port from a container depot or transport hub. [3] The term inland port may also be used for a similar model of a site linked to an airport or land border crossing rather than a seaport. The definition of inland port in the jargon of the transportation and logistics industries is: