
A shell account is a user account on a remote server, traditionally running under the Unix operating system, which gives access to a
shell via a command-line interface protocol such as telnet,
SSH, or over a
modem
A modulator-demodulator or modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. A modem transmits data by modulating one or more c ...
using a
terminal emulator.
Shell accounts were made first accessible to interested members of the public by Internet Service Providers (such as
Netcom (USA),
Panix,
The World and
Digex), although in rare instances individuals had access to shell accounts through their employer or university. They were used for file storage, web space, email accounts, newsgroup access and software development.
Before the late 1990s, shell accounts were often much less expensive than full net access through
SLIP or
PPP, which was required to access the then-new
World Wide Web. Most
personal computer
A personal computer (PC) is a multi-purpose microcomputer whose size, capabilities, and price make it feasible for individual use. Personal computers are intended to be operated directly by an end user, rather than by a computer expert or tech ...
operating system
An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs.
Time-sharing operating systems scheduler (computing), schedule tasks for ef ...
s also lacked
TCP/IP stacks by default before the mid-1990s. Products such as
The Internet Adapter were devised that could work as a proxy server, allowing users to run a web browser for the price of a shell account.
Shell providers are often found to offer ''shell accounts'' at low-cost or free. These ''shell accounts'' generally provide users with access to various software and services including
compilers, IRC clients, background processes, FTP, text editors (such as
nano) and
email client
An email client, email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email.
A web application which provides message management, composition, and reception functio ...
s (such as
pine
A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family (biology), family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanic ...
).
Some shell providers may also allow tunneling of traffic to bypass corporate firewalls.
See also
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Bulletin board system
A bulletin board system (BBS), also called computer bulletin board service (CBBS), is a computer server running software that allows users to connect to the system using a terminal program. Once logged in, the user can perform functions such ...
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FreeBSD jail
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Free-net
A free-net was originally a computer system or network that provided public access to digital resources and community information, including personal communications, through modem dialup via the public switched telephone network. The concept or ...
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SDF Public Access Unix System
Super Dimension Fortress (SDF, also known as freeshell.org) is a non-profit public access UNIX shell provider on the Internet. It has been in continual operation since 1987 as a non-profit social club. The name is derived from the Japanese an ...
, one of the oldest and largest non-profit public access UNIX systems on the Internet.
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Slirp
Slirp (sometimes capitalized SLiRP) is a software program that emulates a PPP, SLIP, or CSLIP connection to the Internet using a text-based shell account. Its original purpose became largely obsolete as dedicated dial-up PPP connections and b ...
, a
free software
Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, ...
application similar to The Internet Adapter
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SSH tunneling
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The Big Electric Cat
The Big Electric Cat, named for an Adrian Belew song, was a public access computer system in New York City in the late 1980s, known on Usenet as node dasys1.
History
Based on a Stride Computer brand minicomputer running the UniStride Unix va ...
was a public access computer system in New York City in the late 1980s, known on Usenet as node dasys1.
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The Internet Adapter, a graphical application front end for internet access using shell accounts allowing TCP/IP-based applications such as Netscape to run over the shell account.
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The WELL, best known for its Internet forums, but also provides email, shell accounts, and web pages.
References
External links
Shell providers list
{{DEFAULTSORT:Shell Account
Internet hosting
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Unix