China DOS Union

I've been learning batch files lately, and came across a pretty good little thing for randomly generating passwords.
Reposting it here to share~
It uses quite a lot of commands. For someone at my level, I feel every bit of it is gold, and it really needs to be understood line by line.


@echo off
call :randomPassword 8 pass1
echo %pass1%
pause
exit
:randomPassword
::---------generate random password
::---------%1 is the password length, %2 and after are the names of the return variables
::---------goto loop, nested variables, nested commands
@echo off
if "%1"=="" goto :eof
if %1 lss 1 goto :eof
set password_len=%1
set return=
set wordset=abcdefghijklmnopqrstuvwxyz023456789_
::---------------------------loop
:randomPassword1
set /a numof=%random%%%36
call set return=%return%%%wordset:~%numof%,1%%
set /a password_len-=1
if %password_len% gtr 0 goto randomPassword1
::---------------------------loop
if not "%2"=="" set %2=%return%
shift /2
if not "%2"=="" goto randomPassword

I suggest using the CODE tag.

For someone at my level, I feel every bit of it is gold, and it really needs to be understood line by line.

Mm, if you have time, just read more tutorials.

Hehe, interesting.
Randomly picks %1 characters from a-z 0-9 _, then combines them as the password.

If you add A-Z, wouldn't that be even more perfect?

Can't you use for instead of a goto loop?

[ Last edited by DXSX on 2010-9-10 at 13:44 ]

Ahem... moderator... where is the tutorial on setting %1~9 parameters?...