Howto set or force user to change a password at first login under Linux

last updated in Categories Debian Linux, Linux, RedHat/Fedora Linux, Suse Linux, Sys admin, Tips, Ubuntu Linux

Recently I got a question that read as follows:


How do I force user foo to change a password at the first time login using ssh?

As a sys admin you may need this kind of facility. There are many ways to achieve this.

You can set empty/null password and use passwd command to expire password. This will result into immediate password change for the first time.

For example you just need to type following two commands:
# usermod -p “” foo
# chage -d 0 foo

You can also ignore first command if foo is already exists in system.


Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

6 comment

  1. Hi, but if you are running a Debian based distro on your server it is necessary to add the ‘shadow’ file into your ‘/etc/’ directory if you want this to work. So, to do this execute the following command ‘pwconv’ from CLI and the ‘/etc/shadow’ file will be automatically created. After that execute the ‘chage -d 0 username’. And that it’s.


  2. Here are a set of scripts that work with RHEL 5.2. as Bash scripts.

    userlist.txt – Contains a set of UID’s to be created. – creates the UID’s – Changes the password for the uids defined in userlist.txt – sets the UID password to expire (forces the user the change password @ logon)


    for i in `more userlist.txt`


    echo ${i}
    adduser ${i

    for i in `more /root/users/userlist.txt `


    echo ${i}
    echo ${i}”1234″ | passwd –stdin ${i}

    echo; echo “User ${i}.s password changed!”


    for i in `more userlist.txt `


    echo $i

    echo ${i} | chage -d 0 ${i}

    echo; echo “User $i will be forced to change password on next login!”


  3. The scripts should do a “cat” instead of the “more” … the more command will create a problem if there are more than page it will wait for a keypress.

  4. Hi,

    Thanks for the tips and script.
    But, after executing the above commands to enforce the user to change the password upon first login, I am not able to see this comment (You are required to change your password immediately (root enforced)) in PUTTY screen when I login as the respective user.

    Of course, this works when I directly login on my VM.

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