Which type of command requires additional files to perform specific operations?
A. Internal commands
B. External commands
C. Valuable commands
D. Primary commands
Answer: Option B
Solution (By Examveda Team)
External commands are predefined commands for end users. They are operating-system independent and are protected by authorizations, so that normal end users can schedule only those commands that the system administrator permits them to.This Question Belongs to Computer Fundamentals >> Operating System
In computing, an external command refers to a command that is not built into the command-line interpreter (shell) but instead is a separate program or executable file stored on disk (usually in system folders like C:WindowsSystem32 on Windows or /bin, /usr/bin on Linux).
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🔹 Examples
✅ In Windows Command Prompt (CMD):
Internal command: dir, cd, cls, echo
External command: ping, ipconfig, xcopy, chkdsk
> These are .exe files in system directories.
✅ In Linux/Unix Terminal:
Internal command: cd, echo, pwd
External command: ls, grep, cat, cp
> These are stored in /bin, /usr/bin, etc.