passwd command – nixCraft

How to force users to use secure passwords on Ubuntu/Debian Linux

August 28, 2016August 29, 2016in Debian / Ubuntu, Linux, Security, User Management last updated August 29, 2016

My Linux shell user can modify their password using the passwd command. How can I force users to choose the secure password that will prevent users from using stupid passwords like “abc123”, “password”, “123456” and so on? How do I setup password quality requirements on my Debian or Ubuntu Linux server?

Change Password Using passwd Command Over SSH Based Session

October 4, 2013October 15, 2013in Commands, Linux, OpenBSD, UNIX last updated October 15, 2013

I‘m a new Ubutnu Linux user. I backup files to our corporate Unix backup server using the rsync command. The server only allow to upload/download files. I am unable to login to the server. How do change my password using the passwd command over ssh based session?

CentOS / RHEL: Set Accounts To Disable After Password Expiration

December 1, 2012December 1, 2012in CentOS, RedHat and Friends last updated December 1, 2012

How do I automatically disable user accounts after 30 days after password expiration date under CentOS / Fedora / Red Hat / RHEL / Scientific Linux server operating systems?