Windows批处理作业如何在回显关闭时回显命令

Question

I have searched and searched for this and I can't find the answer. Maybe it's not possible. I want to do "echo off" for my whole batch job, BUT i want certain lines to echo.

I know I could put an @ in front of every line and just leave the @ off any lines I DO want to echo.

But is there a way to do:

echo off
call setver
if not exist todir md todir
copy myfile.exe todir

I want nothing to echo EXCEPT the "copy" statement...

Answer 1

@echo off
call setver
if not exist todir md todir
ECHO ON
copy myfile.exe todir
@ECHO OFF

should do what you want, IIUC.

and for the inevitable follow-up, "how do you echo the word "on"`

echo(on

where ( may be any of the usual crew like . etc.

Answer 2

You could also echo the command itself before executing it.

@echo off
call setver
if not exist todir md todir
echo copy myfile.exe todir
copy myfile.exe todir

As it can be seen, the command to show visible is just duplicated in file and echo is put before. That works also with environment variables referenced on line of the command.

Care must be taken only on a command which contains a redirection as the redirecting angle bracket(s) must be escaped with ^ to output the angle bracket instead of redirecting the message. Example:

@echo off
echo set ^>"%TEMP%\AllVariables.txt"
set >"%TEMP%\AllVariables.txt"
del "%TEMP%\AllVariables.txt"