In this topic, you will learn about, Differentiate between Internal command and External command in UNIX Operating System.
| Internal command | External command |
| Cat, by, ls, ls-lamb use internal commands. | PW, rm, talk, kill, cat, mudar, sort use as external commands. |
| The internal command uses pre-defined files install with UNIX. | The external command uses some additional files to specify the external command. |
| It is only used to display. | Its settings can be changed or modified |
| It supports she or bash shell scripting. | It supports corn and boron shell. |
| UNIX internal commands create shell Korn or boron shell programming which only work with programming. | create C, C++, java pearl UNIX OS. |
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