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How to reset password in single user mode in Mac OS X

To change the user password in Leopard(10.5.x) or SnowLeopard (10.6.x) Hold "Command + S" key on your mac keyboard to boot your mac into single user mode. Execute command "mount -uw /" in shell. Run below command " launchctl load /System/Library/LaunchDaemons/com.apple.DirectoryServices.plist" Execute command :  passwd change the password of root.

How to find a specific file belongs to which RPM or DPKG package on linux systems.

         On Linux systems ( RPM or Debian), We would often require to find out to which package the target file belongs on the system. This can be found by using following set of commands on the system. On RPM based systems :           When we execute the rpm -qf command to find out which package the file belongs ( as shown in the example below) rpm -qf /etc/protocols   setup-2.8.14-20.el6_4.1.noarch The /etc/protocols file belongs to package "setup-2.8.14-20.el6_4.1.noarch" on SLES 11 Sp3. On Debian based systems :          When we execute the dpkg -S  command to find out which package the file belongs ( as shown in the example below) #dpkg -S /etc/protocols netbase: /etc/protocols The /etc/protocols file belongs to package "netbase"  in ubuntu 14.04/ We can also use the below metho...

How to create bootable OS X Mavericks install media on USB/Disk Volume

             Apple's Mavericks installer now comes with a tool to make a bootable installer. Run the following command to create an installer disk. sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ Mavericks.app --nointeraction for more details on this please refer to  http://support.apple.com/kb/HT5856

How to enable root login in gnome on Debian 6 or 7

Root user login in gnome is disabled on Debian system by default for security reasons. If you want to enable it for specific reasons then follow the below steps : 1. Login into Debian system 2. launch the Root Terminal from Applications -> Accessories. 3. Authenticate with password to launch the Root Terminal. 4. Open "/etc/pam.d/gdm3" with vi.          #vi /etc/pam.d/gdm3 5. Look for "auth     required     pam_succeed_if.so  user  != root   quiet_success"  , comment it out as below.     #auth     required     pam_succeed_if.so  user  != root   quiet_success 6. Save the modification with Esc+w+q+Enter keystroke. 7. Restart or reboot Debian system. 8. Login with root user in gnome. You should be now able to login successfully.   

How to view contents of xar archived Mac OS X installer packages

            Pacifist helps if you want to inspect a downloaded package to see what it will install before installing it. Pacifist opens Mac OS X .pkg package files, .dmg disk images, and .zip, .tar, .tar.gz, .tar.bz2, and .xar archives and allows you to extract individual files and folders out of them. Pacifist can be downloaded from here or here

UnlockRoot - An easy to use tool for rooting android devices

         UnlockRoot   is an easy to use android rooting application on windows.  Android rooting  is the process of allowing users of  smart phones ,  tablets , and other devices running the  Android  mobile operating system to gain  " root access " within Android's subsystem. UnlockRoot supports numerous number of android devices. UnlockRoot is regularly updated to support newer android devices. UnlockRoot can be downloaded from here .

How to cut/convert your miniSIM to MicroSIM or nano SIM?

                  We can convert our mini SIM cards to micro or nano SIM with the easy steps published at : http://www.airportal.de/nanosim/ . The web page has a simple PDF template which has instructions how to cut the SIM card into different shapes. the PDF template can be downloaded from here  too.  Note : All copyrights are owned by respective owners. for more details refer to : This is   released by Christian von der Ropp under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (CC BY-NC-SA 3.0) http://creativecommons.org/licenses/by-nc-sa/3.0/