Windows 7批处理脚本-如果语句不起作用

Question

cd C:\Users\user1\Desktop

if "%time:~0,1%" == " "
ren 85.txt %time:~1,1%.txt 
else ren 85.txt %time:~o,1%.txt 

pause 

The script above is not working, but if I put the following line into file:

ren 85.txt %time:~1,1%.txt 

it is working.

Why is the if...else statement above not working?

Answer 1

cd C:\Users\user1\Desktop

if "%time:~0,1%" == " " (
 ren 85.txt %time:~1,1%.txt 
) else (
   ren 85.txt %time:~0,1%.txt 
)

pause 

You need a brackets , or one line if statement : if "%time:~0,1%" == " " ren 85.txt %time:~1,1%.txt

Answer 2

o doesn't work, try it with 0 (zero):

cd C:\Users\user1\Desktop

if "%time:~0,1%"==" " (ren 85.txt %time:~1,1%.txt 
) else ren 85.txt %time:~0,1%.txt 

pause