FAQ:How do I set or change the root password

2014-06-24T06:30:47Z

Anders Darander: Create a function to change root password

'''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 += "set_root_passwd;"
set_root_passwd() {
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:
# cat /etc/shadow
root:wYNffsf6sozwE:16122:0:99999:7:::
...
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FAQ:How do I set or change the root password