How to associate username and SID
To know which is the username associated with a known SID (Security Identifier), open the registry (regedit.exe) at this location:
Each SID key has a
ProfileImagePath string whose value is the user path which contains the username.
To know which is the SID associated with a known username, select the
ProfileList key and search the username.
There is also a SysInternals command-line utility which shows the SID associated with a known username:
C:\>psgetsid Z24 PsGetSid v1.43 - Translates SIDs to names and vice versa Copyright (C) 1999-2006 Mark Russinovich Sysinternals - www.sysinternals.com SID for WAM2\Z24: S-1-5-21-1993962763-2139871995-725345543-1003or the username associated with a known SID:
C:\>psgetsid S-1-5-21-1993962763-2139871995-725345543-1003 PsGetSid v1.43 - Translates SIDs to names and vice versa Copyright (C) 1999-2006 Mark Russinovich Sysinternals - www.sysinternals.com Account for WAM2\S-1-5-21-1993962763-2139871995-725345543-1003: User: WAM2\Z24
How to mount an image file and access image content
To get access to the content of a virtual machine image or a ISO file, follow these steps:
- associate the file with a loop device node:
# losetup /dev/loop0 /var/otheros.img
- list the partition table of the device:
# fdisk -l /dev/loop0 Disk /dev/loop0: 21.4 GB, 21474837504 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/loop0p1 * 1 2609 20956761 7 HPFS/NTFS
- create device map (
kpartxis part of
multipath-toolspackage on Ubuntu):
# kpartx -a /dev/loop0 # ls -l /dev/mapper/ total 0 crw-rw---- 1 root root 10, 62 Jul 6 2008 control brw-rw---- 1 root disk 253, 0 Jul 5 23:18 loop0p1
- mount the device partition:
# mount /dev/mapper/loop0p1 /mnt
- Making a flat surface
- Installing - ouch, it's not compatible with some MSI K9N Platinum
It is possible to directly open the control panel configuration dialogs writing commands in the Run dialog or in a dos prompt window:
control admintools: open Administrative Tools
control date/time: open the Date and Time properties
control desktop: open the Display properties
control color: open the Display properties and go to Appearance tab
control folders: open Folder Options
control fonts: open the Fonts properties
control infrared: open the Infrared properties
control keyboard: open the Keyboard properties
control mouse: open the Mouse properties
control netconnections: open Network Connections
control telephony: open Phone and Modem Options
control printers: open the Printers properties
control international: open the Regional Settings
control schedtasks: open the Scheduled tasks
control userpasswords: open the User Accounts properties
control userpasswords2: open the Advanced User Accounts properties
control: open the control panel
If the "Safely Remove Hardware" icon disappears, the
control command can help:
control hotplug.dll: open the "Safely Remove Hardware" window
*.cpl file in the Windows directory can be opened with the
control cplfile command:
control vp7dec_settings.cpl: open the On2 VP7 Decompressor Settings, if VP7 codec is installed.
Moreover, some cpl files accept two arguments:
control cplfile[,[@first][,second]]: the first argument indicates the function (if a cpl file controls multiple functions), the second argument indicates the tab of the window to display.
control main.cpl,@0,2: show the 3rd tab of the mouse properties (main.cpl controls mouse and keyboard, @0 is for mouse properties, 2 is the 3rd tab)
control main.cpl,@1,0: show the 1st tab of the keyboard properties (@1 is for kbd properties, 0 is the 1st tab)
Mounting a second fan on the back of the case (Antec SLK3000B)
With the summer approaching, I am making some experiments trying to cool my pc as much as possible while keeping it quiet. Now, airflow in the case is made by 2 fans: the intake fan, a Papst 4412 F/2GLL, pulls air inside the case from the front, the exhaust fan, a Antec Tricool coming with the SLK3000B, pushes air out to the back; in addition, the psu fan pulls air from the top of the motherboard through the psu to the back.
Since I bought a second Papst 4412 F/2GLL, I tried positioning this fan in different locations to see which one conributes the best to the cooling. One of these is the back of the case, in the bottom, where there would be additional cards: it pushes air out of the case through the back slots.
Hard disk suspension in an Antec SLK3000B
The main problem of the Antec SLK3000B case is it converts hard disk vibrations to noise, and this is the most annoying noise coming from my pc when the fans are set at the lowest speed. In the SLK3000B the hard disks lay in a cage with grommets that are supposed to dampen the vibrations of the 7200 and more rpm hard disks.
The trend spreading amongst silencing modders is to suspend the hard disks in the air to avoid contact between the case and the hard disks.
I'll try to answer these questions:
- What is AMD Cool'n'Quiet?
- Does it really work?
Execute a command at shutdown
To dismount TrueCrypt volumes at shutdown and reboot time, I created a script, put it in
/etc/init.d/ and symlinked it into the needed
/etc/rc?.d/ directories using
Here is the detail:
Pausing a command
How to pause / suspend / sleep a running command in a terminal?
How to resume the paused command?
How to rename multiple files from bash
Rename all *html files to *test:
for x in `ls *html`; do mv $x `echo $x | sed -e "s/html/test/"`; done
for var in some-list ; do command ; done