'MS-DOS'
'echo' without trailing newline
To echo a text without the writing of the ending newline (like echo -n under POSIX), type :
echo | set /p="<text>"
where <text> is the text to display.
This commands returns an errorlevel of 1, so you have to add
|| true to reset the errorlevel.
Setting a variable with the result of a command
To put the result of a command in an environment variable, type :
<command> > <file> - set /p <variable>= < <file>
where :
<command>is the command from which you want to retrieve the result,<variable>the name of the environment variable in which you want to store the result of the above command,<file>: the name of a temporary file which can be deleted afterwards.
DOS command return value
The return value of a DOS command can be retrieved through %ERRORLEVEL%. A value other then 0 usually indicates an error.
Clipboard
Copying to clipboard : … | clip.
There is a way to copy from clipboard, but it involves PowerShell.
Also see Cygwin section.
Using a command output as input of another command
https://ss64.com/nt/for_cmd.html
Example to open the http://q37.info/ web site when ouputed by a echo command:
FOR /F %G IN ('echo http://q37.info/') DO start %G
This work as command line. It seems you have to use %%G instead of %G (both times) in a batch file (no tested)
computing/environments/ms-dos.txt · Last modified: 2020/09/18 18:00 (external edit)
