tech notes

Author Archives: nik

Logging File Access in OSX

If you want to log all file accesses start the terminal, switch to root-user and type
fs_usage -w -f filesys > cap.txt
Every file access will be logged to cap.txt. You can grep, view edit for post analysis.

Protected: Windows XP hal.dll Not Found

There is no excerpt because this is a protected post.

Disk Thrashing After Suspending a VM

I have had the issue that after suspending a certain VM the disk activity would go up after a few minutes. Quite annoying because the system was almost unusable. Kind of like it was doing some defragmentation. After a few minutes of researching (a.k.a googling ) I came across this thread on the [...]

Connecting to a VM’s console via a SSH tunnel

From the client you have to build an SSH tunnel forwarding ports 443, 902, 903. Make sure you are *not* forwarding from 127.0.0.1 (since according to this posting on the VMware forums) this seems to have a special meaning when using the VMWare client, instead use 127.0.0.2. In this example the server’s IP address is [...]

Automatic Restoration of Quarantined McAfee Files

After reading about the most recent faux-pas from McAfee where couple of system files were identified as infected I found this script which restores the quarantined files:
Option Explicit
on error resume next
Dim fso, f, str, commando, df, fdf, r, ff, WshShell, fx, strfx, rr, arrParm
Set fso = CreateObject(“Scripting.FileSystemObject”)

if fso.FileExists(“C:\quarantine\infected.log”) Then
Set f = fso.OpenTextFile(“infected.log”, 1)

Set WshShell = [...]

Slow Startup After Logging into XP

So this one friend was complaining about his Windows XP acting sluggish after he has logged in. It takes almost 3 minutes until he is able to open the Windows Explorer – during that time the computer reacts very slowly, but the CPU load never really jumps up. After installing all updates and such I [...]

GPG error – Key error while apt-get update

Invoking apt-get update led to following error message
#apt-get update
[...]
Fetched 254kB in 7s (35.8kB/s)
Reading package lists… Done
W: There is no public key available for the following key IDs:
9AA38DCD55BE302B
W: GPG error: http://ftp2.de.debian.org unstable Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 9AA38DCD55BE302B
W: GPG error: http://ftp.uni-stuttgart.de testing Release: The following signatures [...]

Extract eMail Addresses from Mails in Outlook

You want to send a newsletter to a bunch people who have sent you an email? Easy…

Move (or copy) all mails into one folder
Click on File -> Import/Export -> Export into a file -> Comma seperated values (Windows)
Choose the folder which holds the mails
Choose export file location
Enable the action export emails from folder
Click on “map [...]

Recovery of Failure Due to Partial Harddisk Failure

Recently a colleague called us and asked whether we could help him. His gentoo-system suffered from a boot problem and he was not able to start his system up which was showing “BOOT DRIVE FAILURE”. Since he did not setup the system (which was his IMAP-server, fax-server, phone-management server and on top his webserver to [...]

Raw ext2 Recovery (Part 1)

Recovering a ext2 partition which has been partly overwritten
What a stupid mistake that was. I had my ext2 drive in my windows box. Since I was trying out a few things I was trying to mount a drive via iSCSI and I accidentally formatted the local drive instead of the iSCSI drive (that explains why [...]

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