How To Generate a /etc/passwd password hash via the Command Line on Linux

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Mattias Geniar, October 26, 2015

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If you’re looking to generate the /etc/shadow hash for a password for a Linux user (for instance: to use in a Puppet manifest), you can easily generate one at the command line.

$ openssl passwd -1
Verifying - Password:

If you want to pass along a salt to your password;

$ openssl passwd -1 -salt yoursalt

The above examples all prompt your password, so it won’t be visible in the history of the server or in the process listing. If you want to directly pass the password as a parameter, use one of these examples.

$ openssl passwd -1
Verifying - Password:

$ echo 'joske' | openssl passwd -1 -stdin

By default, this will use an md5 algoritme for your password hash. The openssl tool only allows for those md5 hashes, so if you’re looking for a more secure sha256 hash you can use this python script as shared by Red Hat.

$ python -c "import crypt; print crypt.crypt('joske')"

There you go!

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