Vertical bar

؋ ​₳ ​฿ ​₿ ​₵ ​¢ ​₡ ​₢ ​$ ​₫ ​₯ ​֏ ​₠ ​€ ​ƒ ​₣ ​₲ ​₴ ​₭ ​₺ ​₾ ​₼ ​ℳ ​₥ ​₦ ​₧ ​₱ ​₰ ​£ ​元 圆 圓 ​﷼ ​៛ ​₽ ​₹ ₨ ​₪ ​৳ ​₸ ​₮ ​₩ ​¥ ​円The vertical bar ( | ) is a computer character and glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular meanings: Sheffer stroke (in logic), verti-bar, vbar, stick, vertical line, vertical slash, bar, pike, or pipe, and several variants on these names. It is occasionally considered an allograph of broken bar (see below). The vertical bar ( | ) is a computer character and glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular meanings: Sheffer stroke (in logic), verti-bar, vbar, stick, vertical line, vertical slash, bar, pike, or pipe, and several variants on these names. It is occasionally considered an allograph of broken bar (see below). The vertical bar is used as a mathematical symbol in numerous ways: The double vertical bar, .mw-parser-output .monospaced{font-family:monospace,monospace}U+2016 ‖ .mw-parser-output .smallcaps{font-variant:small-caps}DOUBLE VERTICAL LINE, is also employed in mathematics. The vertical bar is used in bra–ket notation in quantum physics. Examples: A pipe is an inter-process communication mechanism originating in Unix, which directs the output (standard out and, optionally, standard error) of one process to the input (standard in) to another. In this way, a series of commands can be 'piped' together, giving users the ability to quickly perform complex multi-stage processing from the command line or as part of a Unix shell script ('bash file'). In most Unix shells (command interpreters), this is represented by the vertical bar character. For example: