Shulou(Shulou.com)06/01 Report--

There are many ways for linux to generate random passwords, two of which are introduced here, one is the internal system variable ($RANDOM), and the other is to use openssl.

The internal system variable ($RANDOM) can directly echo to get a set of random numbers:

# echo $RANDOM30468

Get an 8-digit random number:

# echo $RANDOM | md5sum | cut-c 1-8393c839b

Use the openssl command to get a random number:

# openssl rand-base64 8qpIpWLYS6Yk =

Get an 8-digit random number:

# openssl rand-base64 8 | cut-c 1-8GPHYu+MU

Create 10 system users in batch and set the random number password script to:

# cat useradd.sh #! / bin/bashfor I in `seq-w 10` do pass= `echo $RANDOM | md5sum | cut-c 1-8` # when using random numbers as passwords, be sure to define variables, otherwise the generated password and the last recorded password are not uniform useradd user$i & & echo $password | passwd-stdin user$i echo-e "user:user$i\ t pass:$pass" > > / tmp/user.logdone

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