User:Scott/02
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Useful Tech Support Commands
PRINTME - /var/lib/freegeek-extras/printme
Backup Password
- cp /etc/shadow /etc/shadow.bak - (hash of root + user)
Change Password
passwd [username] passwd –e [username] – (change on startup)
Add / Delete User
adduser [username] adduser [username] admin userdel [username]
Updates & Broken Packages
apt-get update apt-get dist-upgrade
apt-get install --fix-broken apt-get install ubuntu-desktop
apt-get purge xxx
File System Check
fsidk -l
fsck -fyv /dev/sda1 (f=force y=fix)
shutdown -rF now (reboot, forcing fsck on root filesystem)
Mount & un-Mount
df -h (show partition booted from) ls /media (mounted from GUI) cat /etc/fstab (partitions and devices = mount on start-up)
mount /dev/sdb1 /mnt/xxx
umount /dev/sdb1 (sudo)
Badblocks
badblocks -nvs /dev/sda1
Backup Home Directory
- date (e.g. 20121223 for Dec 23 2012)
Backup
sudo cp /etc/passwd /etc/shadow /etc/group /home/ dpkg --get-selections > dpkg.out sudo mv dpkg.out /home/ sudo tar -czf /home/etc.backup.tar.gz /etc/ sudo rsync -avzh /home/ tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber] 2>rsync.log
View error log less rsync.log
Note: on the data recovery box you will need to add /mnt/sdb1 in front of /home this avoids the need to chroot.
dpkg --get-selections --admindir=/mnt/sdb1/var/lib/dpkg >dpkg.out
Restore
sudo rsync -avzh tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber]/ /home sudo dpkg --set-selections < /home/dpkg.out sudo apt-get -u dselect-upgrade