bshell

Browse for both SSH and VNC servers

$ bshell

$ bshell --ssh

$ bshell --vnc

$ bshell --domain [domain]

sh [options] [script-file [arguments...]]

-c string
    Reads commands from the provided 'string'.

-i
    Invokes the shell in interactive mode.

-s
    Reads commands from standard input.

-r
    Invokes the shell as a restricted shell, limiting certain operations for security.

-u
    Treats unset variables as an error, causing the shell to exit.

-v
    Prints shell input lines as they are read.

-x
    Prints commands and their arguments as they are executed (debug mode).

--help
    Displays help information for the shell.

--version
    Displays version information for the shell.

The command 'bshell' is not a standard Linux command found in most modern distributions. It is highly probable that the query refers conceptually to the Bourne Shell, for which the actual command is 'sh'.

The Bourne Shell ('sh') is a foundational command-line interpreter for Unix-like operating systems, developed by Stephen Bourne at Bell Labs. It was the default shell on Unix systems until the mid-1980s and remains critically important, especially for scripting, due to its ubiquitous presence and POSIX compliance. 'sh' provides a programming language to control program execution, offering features like variables, control flow (if/then/else, loops), function definitions, and I/O redirection. Many shell scripts begin with #!/bin/sh to ensure compatibility across different Unix and Linux systems. Modern Linux distributions often symlink /bin/sh to more advanced shells like bash or dash, but they generally maintain a high degree of sh-compatibility.

The command 'bshell' itself is not a standard or commonly recognized Linux command. The information provided above pertains to the Bourne Shell, invoked via the command 'sh', which is often conceptually referred to by its full name.

While 'sh' is highly portable, its feature set is minimal compared to modern shells like bash or zsh. Common interactive conveniences like command history, tab completion, and advanced globbing are typically absent in a pure 'sh' environment. Implementations of /bin/sh on modern systems may offer extensions but are designed to be strictly POSIX compliant when invoked as 'sh'.

The Bourne Shell's syntax and behavior critically influenced the POSIX.1-2008 standard for shells, making 'sh' a highly portable choice for shell scripting. Scripts written for 'sh' are generally expected to function consistently across various Unix-like systems, ensuring maximum compatibility.

Many shell scripts begin with the 'shebang' line: #!/bin/sh. This special line instructs the operating system to execute the script using the interpreter located at /bin/sh. This practice is crucial for ensuring that scripts are executed in a POSIX-compliant environment, regardless of the user's default interactive shell (which might be bash, zsh, etc.).

The Bourne Shell, 'sh', was developed by Stephen Bourne at Bell Labs and released in 1977 with Version 7 Unix. It was a significant improvement over its predecessor, the Thompson shell, by introducing advanced features like control flow constructs, functions, and robust signal handling, thereby transforming the shell into a powerful scripting language. Its syntax and design became the foundational basis for the POSIX shell standard, profoundly influencing all subsequent major Unix and Linux shells.

Although its direct interactive use has largely been superseded by more feature-rich shells, its legacy and paramount importance in shell scripting, especially for portable scripts, remain undiminished. The term 'bshell' is sometimes used colloquially or historically to refer to the Bourne Shell, but the actual command invoked is 'sh'.

bash(1), dash(1), zsh(1), csh(1), tcsh(1)