Raymii.org

Table of Contents

• Perl
• mkpasswd
• OpenSSL

These small snippets create password strings you can put in /etc/shadow when you need to reset a password on a system.

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Perl

perl -e 'print crypt("password","\$6\$salt\$") . "\n"'

Replace password with the password, and salt with the salt. Need some random stuff for the salt? openssl helps:

openssl rand -base64 10 
iDaorRK/57YZfQ==

mkpasswd

On Ubuntu/Debian, install the whois package. On Arch, install debian-whois- mkpasswd from the AUR.

mkpasswd -m sha-512 password salt

OpenSSL

If you need an older style crypt password you can use OpenSSL:

openssl passwd -1 -salt salt password