Batch basics
comments
REM lines beginning with 'REM' are comments REM (they cannot be indented)
echo
echo is the batch's print statement. It does not require quotes.
echo
echo with a newline is technically possible using
!LF!^, but don't do it. just don't.echo your message@echo off
By default, every command in a batch script is printed in addition to it's output. you can disable this using @echo off
@echo off
%cd%
%cd% is the equivalent to pwd in unix. (the current working directory).
escape character
The
\character is used for paths in dos, so it uses the caret character in it's place.REM escape non-% characters ^" REM escape a % %%
pause
REM 'pause' waits for a keypress before continuing pause
goto
goto statements have over time become recognized as a bad idea. But they are the primary way of controlling the flow of code in batch. Use them as a last resort.
:Label1 echo "things" && echo "things" goto Label1
filepath expansion
Technically, this is documented under the for loop's documentation. (see
for /?).
set I=C:/path/to/some/file %~I - expands %I removing any surrounding quotes (") %~fI - expands %I to a fully qualified path name %~dI - expands %I to a drive letter only %~pI - expands %I to a path only %~nI - expands %I to a file name only %~xI - expands %I to a file extension only %~sI - expanded path contains short names only %~aI - expands %I to file attributes of file %~tI - expands %I to date/time of file %~zI - expands %I to size of file %~$PATH:I - searches the directories listed in the PATH environment variable and expands %I to the fully qualified name of the first one found. If the environment variable name is not defined or the file is not found by the search, then this modifier expands to the empty stringhttps://stackoverflow.com/questions/5034076/what-does-dp0-mean-and-how-does-it-work
clipboard
copy output to clipboard
echo "some text" | clip
prompt geometry
get size of cmd prompt.
mode con
