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It is used to either print a list of environment variables or run another utility in an altered environment without having to modify the currently existing environment. Using env, variables may be added or removed, and existing variables may be changed by assigning new values to them. In practice, env has another common use. It is often used by ...
The SET command without any arguments displays all environment variables along with their values; SET " ", zero or more spaces, will include internal variables too. In CMD.EXE , it is possible to assign local variables that will not be global using the SETLOCAL command and ENDLOCAL to restore the environment.
The command is available in Windows 2000 and later. [4] It is compatible with Windows Console and Windows Terminal. The default window title is defined in the %COMSPEC% environment variable. [5] However, since the Windows Console title can also be defined in the program shortcut, the title is usually set to "Command Prompt".
Shell functions, especially if the command being created needs to modify the internal runtime environment of the shell itself (such as environment variables), needs to change the shell's current working directory, or must be implemented in a way which guarantees they it appear in the command search path for anything but an interactive shell ...
Displays or change the value of the PROMPT environment variable which controls the appearance of the prompt. RENAME, REN Renames a file or directory. RMDIR, RD Removes an empty directory. SET Sets the value of an environment variable; without arguments, shows all defined environment variables. TIME Display and set the time of the system. TRUENAME
The startup scripts that launch the X window system may also do surprising things with the user's Bash startup scripts in an attempt to set up user-environment variables before launching the window manager.
PATH is an environment variable on Unix-like operating systems, DOS, OS/2, and Microsoft Windows, specifying a set of directories where executable programs are located. In general, each executing process or user session has its own PATH setting.
POSIX shells set the following environment variables while using the cd command: [22] OLDPWD The previous working directory (as set by the cd command). PWD The current working directory (as set by the cd command).