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The variable's contents can be displayed by typing SET COMSPEC or ECHO %COMSPEC% at the command prompt. The environment variable by default points to the full path of the command line interpreter. It can also be made by a different company or be a different version. Another use of this environment variable is on a computer with no hard disk ...
In DOS, OS/2 and Windows command-line interpreters such as COMMAND.COM and CMD.EXE, the SET command is used to assign environment variables and values using the following arguments: SET VARIABLE = value
PROMPT 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 ...
cmd.exe in Windows NT 2000, 4DOS, 4OS2, 4NT, and a number of third-party solutions allow direct entry of environment variables from the command prompt. From at least Windows 2000, the set command allows for the evaluation of strings into variables, thus providing inter alia a means of performing integer arithmetic. [26]
This limit includes the command line, individual environment variables that are inherited by other processes, and all environment variable expansions. [10] Quotation marks are required for the following special characters: [8] & < > [ ] { } ^ = ; ! ' + , ` ~ and white space.
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.
The category Windows commands deals with articles related to internal and external commands supported by members of the Windows family of operating systems including Windows 95, Windows 98, Windows 98 SE and Windows ME as well as the NT family.
Since Windows NT this is not working as the cmd.exe introduced command processor extensions and append become redundant. Despite this the executable was and is still available in 32-bit versions of Windows. Anyway, the command relied on %DPATH% environment variable, which can be edited with the dpath command.