If you ever need to count the occurences of a character in all (or some) files, this next series of commands would come in handy: for f in `ls`; do cat $f; done | awk ‘{ for ( i=1; i<=length; i++ ) arr[substr($0, i, 1)]++ }END{ for ( i in …
The dd utility can be successfully used to create a backup of a filesystem (in lack of more specialised backup utilites). dd if=/dev/sdaX | gzip > /backup/sdaX.gz where sdaX is the partition you want to backup, and the /backup folder is located on a different disk/partition than the one you’re …
This function comes in handy when you want to make a compressed sector-by-sector backup of your Linux filesystem and you don’t want to include/waste space with the unused sector (which still have information on them) Running nice cat /dev/zero > zero.fill;sync;sleep 1;sync;rm -f zero.fill before the actual backup will make …
Windows Xp reads information from media to let you find out properties (width, height, bitrate and/or others) of avi, mpg, asf, etc. files. This “behavior” can lock your avi files from being deleted, moved or renamed, and sometimes it’s just plain annoying. To disable this action, use Regedit to delete …
This error might occur if Windows Management Instrumentation (WMI) components are missing or not registered correctly. This error manifest itself, among others, by not displaying any more processor information in System Properties, and by returning a “Class no registered” error message after running the “systeminfo” command. Registering the WMI components …
If you’ve ever needed to expand and restore multiple files from the Windows Xp CD (and don’t want to run expand for each file by hand), the following batch file might come in handy: @echo off setlocal set List=X:\path\*.ex_ for /f “delims=” %%a in (‘dir /b “%List%”‘) do expand %%a …
I updated my server’s operating system from Fedora Core 6 (on which VMware Server ran perfectly) to Fedora 8. Fedora 6 was running an older 2.6.25 (which VMware liked just fine), but Fedora 8 brought me the 2.6.26.6-49.fc8 kernel, which caused a lot of trouble.
After spending 5 hours looking everywhere for a solution (I even thought the newer v1.08 would work on this kernel – but it didn’t), I considered writing down what I did to finally get my virtual machines up and running:
