Interactive command-line periods: Following start, a system may deliver an operator using an independent suggests to enter commands.
The tip of the HELP command output from RT-11SJ shown on the VT100 If more detailed enable is important than supplied by a plan's crafted-in inside aid, numerous units guidance a devoted external enable command" command (or related), which accepts a command name as contacting parameter and can invoke an exterior enable program.
b : a slim crease (as over the confront) : wrinkle c : the class or path of a little something in motion : route the road of flight of the bullet
There are a variety of textual content manner games, like Adventure or King's Quest one-three, which relied within the consumer typing commands at the bottom of the monitor. A single controls the character by typing commands like 'get ring' or 'glance'.
The Unix #! mechanism and OS/two EXTPROC command aid the passing of batch information to exterior processors. You can use these mechanisms to write down particular command processors for focused works by using, and approach external data data files which reside in batch documents.
The position light signal factor was at first devised by the Pennsylvania Railroad and was continued by Amtrak and adopted by Metro North. Steel symptoms were being hung from the catenary supports Using the letters "PB" developed by a sample of drilled holes.
If the line is beneath maintenance, an harm may arise as the catenary is out of the blue energized. Even when the catenary is adequately grounded to protect the staff, the arc created throughout the pantograph can problems the pantograph, the catenary insulator or each.
For the reason that ? and ! figures generally also provide other needs with the command line, they will not be readily available in all eventualities, consequently, they shouldn't be the sole alternatives to entry the corresponding support facts.
The waves need to vacation quicker in comparison to the teach in order to avoid producing standing waves, which could split the wire. Tensioning the road helps make waves vacation quicker, and likewise minimizes sag from gravity.
On overhead wires made for trolley poles, This really is carried out by having a neutral portion concerning the wires, necessitating an insulator. The driving force from the tram or trolleybus should quickly decrease the electrical power draw ahead of the trolley pole passes by, to avoid arc damage to the insulator.
The installation of overhead lines may well require reconstruction of bridges to supply Harmless electrical clearance.[21]
(2) : a slim limited artificial tube that may be inserted roughly a single inch into a vein (as with the arm) to deliver temporary intravenous access for your administration of fluid, medication, or nutrients e(1) : a wire or pair of wires connecting one particular telegraph or phone station with A different or a complete procedure of such wires also : any circuit in an electronic communication method (2) : a telephone connection attempted to obtain a line
Observe that these characters have different meanings than when made use of right within the shell. Angle brackets may be omitted when baffling the parameter title with a literal string is not going.
Overhead lines An overhead line or overhead wire can be an electrical cable that is certainly used to transmit electrical Electricity to electrical locomotives, electric powered a number of models, trolleybuses or trams. The generic phrase employed by the Worldwide Union of Railways for the read more know-how is overhead line.