Tag Archives: sysadmin

whats your windows experience index ?

whats your windows vista 7 or 8 experience index ?

flickr.com/groups/windows-experience-index/

windows experience index

windows experience index

windows 7 + windows xp mode + windows update = problems

windows 7 professional + windows virtual pc + windows xp mode comes with internet explorer 6 and since updates.windows.com doesnt work with ie6 you may get problems trying to run windows update inside your windows xp virtual machine until you have manually downloaded and installed internet explorer 8 !

your windows xp mode vm will be at risk until you’ve done this

openSUSE:Education-Li-f-e features

some of the openSUSE:Education-Li-f-e features i’m loving are

kickoff application launcher app search

  • just search for display and you find a link to display so you can change your screen size
  • just search for desktop and you find a link desktop effects so you can turn off transparency
  • just search for screensaver and you find a link to screensaver so you can turn it off

yast

  • yast software management is just as good as synaptic or yumex

however if you are using it as a desktop you might want to uninstall

  • apache
  • mysql
  • moodle

windows copy xcopy and robocopy

copy – the msdos original

xcopy – lets you copy directory trees

robocopy – first appeared in windows server 2008

windows 7, windows 8 and windows 10 how to disable hibernation

in windows 7, windows 8 and windows 10 you can no longer disable windows hibernation via the gui (which will delete hiberfil.sys and save you up to 12G of disk space)

you now have to find the command prompt app and right click “run as administrator” or find the powershell app and right click “run as administrator”

then type

powercfg -h off

or

powercfg.exe /hibernate off

see

usb problems

i seem to be having unlimited usb problems today

  • usb hub power supply has broken
  • usb hub is sending power upstream (upsetting my raspberry pi)
  • usb motherboard ports are behaving differently
  • usb hub ports are behaving differently
  • usb cable is faulty
  • usb hub doesnt work with windoz 7

error message

There is no driver installed for USB 2.0 Hub. 
Device information 
Name: USB 2.0 Hub 
ID: USB\VID_1A40&PID_0101\6&FD61FB4&0&2 
Error code: 28 
The driver for USB 2.0 Hub is not installed.

windows xp windows update is broken

m$ have broken windoz update for clean (re)installs of windoz xp

this is because windoz xp (and windoz xp sp2) come with internet explorer 6 which is no longer supported by *.windows.com sites including update.windows.com

so after a clean windows xp (re)install you must now 

  • get ie8 installer and install it 
  • get wxp sp3 and install it 

then windows update should work

CDP, RDP & VNC

CDP

RDP

VNC

windoz ssh

there are now quite a few windoz ssh choices

even postfix isnt selinux compliant

thanks goodness for selinux permissive mode

Summary:

SELinux is preventing postalias (postfix_master_t) “write” to ./aliases.db (etc_t).

Detailed Description:

[SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.]

SELinux is preventing postalias (postfix_master_t) “write” to ./aliases.db (etc_t). The SELinux type etc_t, is a generic type for all files in the directory and very few processes (SELinux Domains) are allowed to write to this SELinux type. This type of denial usual indicates a mislabeled file. By default a file created in a directory has the gets the context of the parent directory, but SELinux policy has rules about the creation of directories, that say if a process running in one SELinux Domain (D1) creates a file in a directory with a particular SELinux File Context (F1) the file gets a different File Context (F2). The policy usually allows the SELinux Domain (D1) the ability to write, unlink, and append on (F2).

But if for some reason a file (./aliases.db) was created with the wrong context, this domain will be denied. The usual solution to this problem is to reset the file context on the target file, restorecon -v ‘./aliases.db’. If the file context does not change from etc_t, then this is probably a bug in policy.

Please file a bug report (http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against the selinux-policy package. If it does change, you can try your application again to see if it works. The file context could have been mislabeled by editing the file or moving the file from a different directory, if the file keeps getting mislabeled, check the init scripts to see if they are doing something to mislabel the file.

Additional Information:

Source Context                user_u:system_r:postfix_master_t
Target Context                user_u:object_r:etc_t
Target Objects                ./aliases.db [ file ]
Source                        postalias
Source Path                   /usr/sbin/postalias
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           postfix-2.3.3-2.3.el5_6
Target RPM Packages
Policy RPM                    selinux-policy-2.4.6-327.el5
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Permissive
Plugin Name                   mislabeled_file
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain