The word "bang path" is often spelled with an exclamation mark or bang (!) followed by the word "path". The exclamation mark or bang represents the "!" symbol often used in computer coding to specify a destination address. The word "path" refers to the sequence of hosts or nodes that a message passes through to reach its destination. In IPA phonetic transcription, it would be written as bæŋ pæθ. This term is mainly used in computer networking to describe the routing of electronic messages.
A bang path, also known as an exclamation path, is a term used in computer networking that refers to a specific syntax for specifying the route that an electronic mail (email) message should take to reach its intended recipient. It is primarily associated with the UNIX operating system, though it can also be used in other systems.
A bang path is composed of a series of exclamation marks (commonly referred to as "bangs") followed by a series of hostnames or domain names, separated by exclamation marks. These hostnames or domain names indicate the sequence of computers or network nodes that the email message needs to traverse to reach its destination.
The bang path is usually specified at the beginning of the email address, before the actual username or mailbox name. It provides a low-level addressing mechanism that allows email to be routed across different networks or systems, regardless of the specific email software being used.
For example, if an email address is specified as "!host1!host2!username@example.com", it means that the email message should first be sent to "host1", then to "host2", and finally to the mailbox named "username" at the domain "example.com".
However, with the evolution of modern email protocols and standards, such as SMTP (Simple Mail Transfer Protocol), the use of bang paths has become less common. It is primarily used in specific legacy systems or for specialized purposes where direct control over the routing of email messages is necessary.
The term "bang path" has its origins in computer networking and email systems.
The word "bang" refers to an exclamation mark (!), which was commonly used as a separator in early computer systems.
The term "path" refers to the route or trajectory that a message takes from the sender to the recipient through various intermediate systems or nodes.
In the early days of email systems, messages were routed through a series of hosts or computers, and each hop was denoted by an exclamation mark (!). For example, if a message was sent from user1 on hostA to user2 on hostB, the address might be written as user1@hostA!user2@hostB.
Over time, the use of bang paths declined as more advanced email systems and routing mechanisms were developed. However, the term "bang path" remains to describe this historical method of addressing and routing messages.