Difference between revisions of "User:Scott/02"

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Line 23: Line 23:
 
  passwd –e [username] – (change on startup)
 
  passwd –e [username] – (change on startup)
  
−
=User Add-Delete=
+
=User Name (Add-Delete)=
 
  adduser [username]
 
  adduser [username]
 
  adduser [username] admin
 
  adduser [username] admin
Line 45: Line 45:
 
  shutdown -rF now (reboot, forcing fsck on root filesystem)
 
  shutdown -rF now (reboot, forcing fsck on root filesystem)
  
−
==Mount & un-Mount==
+
==Mount & Un-Mount==
  
 
  df -h          (show partition booted from)
 
  df -h          (show partition booted from)
Line 60: Line 60:
 
=Backup Home Directory=
 
=Backup Home Directory=
 
*date (e.g. 20121223 for Dec 23 2012)  
 
*date (e.g. 20121223 for Dec 23 2012)  
−
==ssh into tsbackup==
+
 
 +
==ssh to tsbackup==
 
  ssh XC tsbackup@tsbackup.fglan nautilus
 
  ssh XC tsbackup@tsbackup.fglan nautilus
 
  ctrl-c (to back-out)
 
  ctrl-c (to back-out)
−
==Backup==
+
 
 +
==rsync==
 
  sudo cp /etc/passwd /etc/shadow /etc/group /home/
 
  sudo cp /etc/passwd /etc/shadow /etc/group /home/
 
  dpkg --get-selections > dpkg.out
 
  dpkg --get-selections > dpkg.out
Line 70: Line 72:
 
  sudo rsync -avzh /home/ tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber] 2>rsync.log
 
  sudo rsync -avzh /home/ tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber] 2>rsync.log
  
−
  View error log less rsync.log
+
  less rsync.log (view error log)
  
−
<pre>Note: on the '''data recovery box''' you will need to add /mnt/sdb1 in front of /home  
+
<pre>Note: on the '''data recovery box'''  
 +
      add /mnt/sdb1 in front of /home  
 
       this avoids the need to chroot.</pre>
 
       this avoids the need to chroot.</pre>
  
 
  dpkg --get-selections --admindir=/mnt/sdb1/var/lib/dpkg >dpkg.out
 
  dpkg --get-selections --admindir=/mnt/sdb1/var/lib/dpkg >dpkg.out
  
−
==Restore==
+
==Restore (from backup)==
 
  sudo rsync -avzh  tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber]/ /home
 
  sudo rsync -avzh  tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber]/ /home
 
  sudo dpkg --set-selections < /home/dpkg.out
 
  sudo dpkg --set-selections < /home/dpkg.out
Line 84: Line 87:
 
  copy (user passwd) hash from original /etc/shadow
 
  copy (user passwd) hash from original /etc/shadow
  
−
==Restore User Permissions==
+
==Restore (user permissions)==
 
*Create a New User (oem or Bob or Mark) - with Admin. Privileges
 
*Create a New User (oem or Bob or Mark) - with Admin. Privileges
 
**drwxr-xr-x 23 1001 1001 4096 2011-07-07 13:28 oem
 
**drwxr-xr-x 23 1001 1001 4096 2011-07-07 13:28 oem
Line 90: Line 93:
  
 
=File Permissions=
 
=File Permissions=
−
 
 
  chmod 774 dir-name (dir)  rwxrwxr--
 
  chmod 774 dir-name (dir)  rwxrwxr--
 
  chmod 664 filename (files) rw-rw-r--
 
  chmod 664 filename (files) rw-rw-r--
Line 98: Line 100:
  
 
=Stress Test=
 
=Stress Test=
−
* [http://wiki.freegeek.org/index.php/CPU_Temperature CPU Temperature]
+
*[http://wiki.freegeek.org/index.php/CPU_Temperature CPU Temperature]
  
 
  while  [[ true ]] ; do uptime ; sensors ; sleep 30s; done | tee temp_load.log
 
  while  [[ true ]] ; do uptime ; sensors ; sleep 30s; done | tee temp_load.log
Line 107: Line 109:
  
 
=Hardware & Resource ID=
 
=Hardware & Resource ID=
 +
 
==lshw==
 
==lshw==
 
  sudo lshw (hardware config)
 
  sudo lshw (hardware config)
 +
 
==CPU==
 
==CPU==
 
  cat /proc/cpuinfo or more /proc/cpuinfo
 
  cat /proc/cpuinfo or more /proc/cpuinfo
 +
 
==Disk Usage==
 
==Disk Usage==
 
  du -sh (-s disk usage)
 
  du -sh (-s disk usage)

Revision as of 21:23, 20 October 2011

   Tech Support
--------------------------------
Home Page      user:scott
Tech Support   user:scott/02
Dir & Files    user:scott/03
Network        user:scott/04
Troubleshoot   user:scott/05
Laptops        user:scott/06
Resources      user:scott/07
Notes          user:scott/08

Template:TOC limit

PRINTME - /var/lib/freegeek-extras/printme

Password

Backup Password

  • cp /etc/shadow /etc/shadow.bak - (hash of root + user)

Change Password

passwd [username]
passwd –e [username] – (change on startup)

User Name (Add-Delete)

adduser [username]
adduser [username] admin
userdel [username]

Updates & Broken Packages

apt-get update
apt-get dist-upgrade

apt-get install --fix-broken
apt-get autoremove
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)

ssh to tsbackup

ssh XC tsbackup@tsbackup.fglan nautilus
ctrl-c (to back-out)

rsync

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

less rsync.log (view error log)

Note: on the '''data recovery box''' 
      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 (from backup)

sudo rsync -avzh  tsbackup@tsbackup:/var/tsbackup/[date-ticketnumber]/ /home
sudo dpkg --set-selections < /home/dpkg.out
sudo apt-get -u dselect-upgrade

copy (user passwd) hash from original /etc/shadow

Restore (user permissions)

  • Create a New User (oem or Bob or Mark) - with Admin. Privileges
    • drwxr-xr-x 23 1001 1001 4096 2011-07-07 13:28 oem
chown –R oem:oem /home/oem (recursively for all sub directories)

File Permissions

chmod 774 dir-name (dir)   rwxrwxr--
chmod 664 filename (files) rw-rw-r--

chmod ugo+rwx /dir/file
chmod ugo-rwx /dir/file

Stress Test

while  true  ; do uptime ; sensors ; sleep 30s; done | tee temp_load.log

stress --cpu 8 --io 4 --vm  2 --vm-bytes 128M  --timeout 4h
  • (add --hdd 2 to stress the hard drive as well, though this shouldn't be necessary)

Hardware & Resource ID

lshw

sudo lshw (hardware config)

CPU

cat /proc/cpuinfo or more /proc/cpuinfo

Disk Usage

du -sh (-s disk usage)
du -sh /home/bob/Downloads/ (disk usage for Downloads)

Available Memory

free –l (available memory)

cat /proc/meminfo

Devices

To see a list of devices currently in use 

cat /proc/devices

AlsaMixer

alsamixer

Printer Drivers

http://www.linuxfoundation.org/
Workgroups -> Open Printing -> Printers

HPLIP

http://hplipopensource.com/hplip-web/downloads.html
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