FAQ:How do I set or change the root password

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Revision as of 10:46, 3 March 2014 by Maxin B. John (talk | contribs) (change the root password)
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Q: How do I set / change the root password?

A: In the image.bb file (eg: core-image-minimal.bb), append this text:

ROOTFS_POSTPROCESS_COMMAND += "\ 

   sed 's%^root:[^:]*:%root:wYNffsf6sozwE:%' \
       < ${IMAGE_ROOTFS}/etc/shadow \
       > ${IMAGE_ROOTFS}/etc/shadow.new;\
   mv ${IMAGE_ROOTFS}/etc/shadow.new ${IMAGE_ROOTFS}/etc/shadow ;"


This will set the root password as "root" in the newly built image.

To choose a different password, use the command: "passwd root" and copy the corresponding part of "/etc/shadow" to this text: eg:

  1. cat /etc/shadow

root:wYNffsf6sozwE:16122:0:99999:7::: ...

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