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Shells are used to interact with the OS and launch other applications.

Most shells also have built-in commands such as directory listings and moving and copying files around the file system. Other shells, such as Bash (bash), can be heavily scripted to do a multitude of tasks.

Shells are used to interact with the Operating System (OS) and launch other applications.

Shells also have built-in commands, depending on the OS. Examples are directory listings, moving and copying files (Windows) or job control (Unix-like).

Most shells offer scripting capabilities, starting with simple sequential execution of commands. For more complex problems, control structures (like conditionals or loops) can be used.

Broadly used shell include:

1. Windows:

• CMD.EXE cmd
• Windows PowerShell powershell

2. Unix-like:

• Bourne Shell sh
• Bourne Again Shell bash
• Korn Shell ksh
• (Tenex) C Shell csh/tcsh
• Z Shell zsh
• Friendly Interactive Shell fish

See Comparison of command shells on Wikipedia for a more extensive list.

Shells are used to interact with the OS and launch other applications.

Most shells also have built-in commands such as directory listings and moving and copying files around the file system. Other shells, such as Bash, can be heavily scripted to do a multitude of tasks.

Shells are used to interact with the OS and launch other applications.

Most shells also have built-in commands such as directory listings and moving and copying files around the file system. Other shells, such as Bash (bash), can be heavily scripted to do a multitude of tasks.

Shells are used to interact with the OS and launch other applications.

Most shells also have built in commands such as directory listings and moving, copying files around the file system. Other shells such as bash can be heavily scripted to do a multitude of tasks.

Shells are used to interact with the OS and launch other applications.

Most shells also have built-in commands such as directory listings and moving and copying files around the file system. Other shells, such as Bash, can be heavily scripted to do a multitude of tasks.