Shell: Difference between revisions

Latest revision as of 18:20, 6 December 2019

In computing, a shell is a user interface for access to an operating system's services. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is a layer around the operating system kernel.

OS/2 CONFIG.SYS statements

PROTSHELL - CONFIG.SYS command to define protected mode shell

Example: PROTSHELL=C:\OS2\PMSHELL.EXE

SHELL - CONFIG.SYS command to define DOS command interpreter

Example: SHELL=C:\OS2\MDOS\COMMAND.COM C:\OS2\MDOS /P

OS2_SHELL - Environment variable

Example: SET OS2_SHELL=C:\OS2\CMD.EXE

@@ Line 1: / Line 1: @@
 In computing, a shell is a user interface for access to an operating system's services. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is a layer around the operating system kernel.
-==OS/2 Config.sys information about the Shell==
+==OS/2 CONFIG.SYS statements==
 *PROTSHELL - CONFIG.SYS command to define protected mode shell
-:Example: <code><br> PROTSHELL=C:\OS2\PMSHELL.EXE</code>
+:Example: <tt>PROTSHELL=C:\OS2\PMSHELL.EXE</tt>
 *SHELL - CONFIG.SYS command to define DOS command interpreter
-:Example: <code><br> SHELL=C:\OS2\MDOS\COMMAND.COM C:\OS2\MDOS /P</code>
+:Example: <tt>SHELL=C:\OS2\MDOS\COMMAND.COM C:\OS2\MDOS /P</tt>
-*OS2_SHELL - Environment variable
+*[[OS2_SHELL]] - Environment variable
-:Example: <code><br> SET OS2_SHELL=C:\OS2\CMD.EXE</code>
+:Example: <tt>SET OS2_SHELL=C:\OS2\CMD.EXE</tt>
+See also: UNIX Shell
 [[Category:Glossary]]