[SOLVED] reseting su password, single user mode not working

Hi everyone,
So I did something stupid (not on purpose obviously) and tried to move the contents of / into my home directory (using mv).
Ok not a really big deal, loaded up a live cd of mint which happened to be around and moved the everything back, rebooted and everything seemed fine.
Then tried to use sudo, and got the error "sudo: effective uid is not 0, is sudo installed setuid root?"
looks like a permissions/ownership issue of /usr/, does this sound right to people?
Anyway then tried su to change the ownership back to root. I am guessing the mint live cd took ownership of it for some reason.
But my password didn't work (neither did leaving it blank), so rebooted into single user mode and reset it and rebooted. However the authentication still fails.
I tried passwd, passwd root and passwd username for good measure but it hasn't resolved the issue. (the disk was mounted as rw)
Have i missed something obvious? What is the next thing to try?
Thanks for any help
Last edited by dynamite (2013-09-25 05:44:01)

Unfortunately none of these worked.
Further, when using chroot sudo works, so I tried to reinstall it using pacman and got the following error:
(1/1) checking keys in keyring [######################] 100%
error: GPGME error: Invalid crypto engine
(1/1) checking package integrity [######################] 100%
error: GPGME error: Invalid crypto engine
error: sudo: missing required signature
:: File /var/cache/pacman/pkg/sudo-1.8.7-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.
when I tried again I got:
error: could not open file: /etc/mtab: No such file or directory
error: could not determine filesystem mount points
error: failed to commit transaction (unexpected error)
Errors occurred, no packages were upgraded.

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Provide Feedback
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Message was edited by: CartooNxHerO

CartooNxHerO wrote:
Ok, so I used the advice from the third link you gave me but i'm still in single user mode trying to figure out how to delete the users home folders.
Message was edited by: CartooNxHerO
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Change Password
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Changing or resetting an account password via GUI:
Resetting a user's password
Resetting the original administrator account password
http://docs.info.apple.com/article.html?artnum=106156
You do not have a CD/DVD
Changing password from single user mode:
You can also change the administrator's password from single user mode or create a new administrator account.
You need to get into single use mode for steps one and two that are listed below.
This page will tell you how to get into single user mode.
http://support.apple.com/kb/HT1492
Basically, you hold down the command-s key then powering on your machine. The command key has a little apple symbol on the lower left. It is between the alt/option key and the space bar. On a PC keyboard, it will be the windows key, I think.
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/sbin/fsck -fy
/sbin/mount -uw /
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# For cryptic information on these commands try:
man ls
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Start with your computer power off. Hold down command-s. Power on your computer.
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/sbin/fsck -fy
/sbin/mount -uw /
cd /var/db
pwd
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Limnos adds detailed explainations:
http://discussions.apple.com/message.jspa?messageID=8441597#8441597
The above the idea came from a post by JoseAranda at September 9, 2006 3:48 AM
http://www.askdavetaylor.com/howdo_i_reset_my_mac_os_x_admin_rootpassword.html
You will need to scroll down to see this post. Search for applesetupdone
Or see:
http://superpixel.ch/articles/running-setup-assistant-again/
Once you have a new administrative account, you can change the password of your old administrative account
blue apple > System Preferences > Accounts

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[SOLVED] reseting su password, single user mode not working

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