Thursday, April 29, 2021

Checking if our password is based on a dictionary word on linux command line

There is a package in linux that can be used to check the our password, if it is based on a dictionary word, and that is libcrack (or libcrack2 in debian based).

To install the package:
  • In redhat family:
# yum install cracklib -y
  • In debian family:
# apt install libcrack2

To use, just run cat and pipe it against cracklib-check command, and supply your password after that. Do not forget to type ctrl-d or ctrl-c to get back to the shell, once done.
$ cat | cracklib-check


password: it is based on a dictionary word
$ cat | cracklib-check


Xeir3oongex*: OK

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