Linux to generate a random password

1 install expect

yum install Expect

2 command line

mkpasswd -L  32  -d  5  -C  5

The above command generates a 32-bit password at least 5 numbers and 5 upper case letters, such a powerful password and slowly break it:)

3 scripting, batch generate 30 passwords

vi pass.sh 
 #! / bin / bash 
 
i = 1  
echo  "######## Power by gaojinbo.com ##########"  > / tmp / passwd.txt 
 while  [  $ i  -le  30  ] ; do  
/ usr / bin / mkpasswd -L  32  -d  5  -C  5  >> / tmp / passwd.txt 
 let i + = 1  
done  
exit ;

The above script will generate a password on the / tmp / passwd.txt file

Done!