How to find latitude and longitude of a location in Google Maps?

Step 1:

Open the Google Maps website (http://maps.google.com/) and key-in the location details in the search box.

Step 2:

Select the location in the search results for which the latitude and longitude are to be identified.

Step 3:

Zoom-in as much as possible and right click on the exact location for which latitude and longitude are to be identified. Then, please choose the ‘Center map here‘ option displayed in the pop-up menu.

Step 4:

On the address bar of your browser, key-in the below javascript code.

javascript:void(prompt('',gApplication.getMap().getCenter()));

This will display the latitude and longitude of the location in question within a dialog box as portrayed in the image below.

Step 5:

An alternative method to identify the latitude and longitude is to click on the ‘Link‘ hyperlink on the right top corner of the Google Map sub-frame and glance at the contents displayed in the text box below the label – ‘Paste link in email or IM‘ (as shown in the image below).

Disclaimer

All data and information provided on this site is for informational purposes only. Niether sks8.wordpress.com nor skumar.co.nr makes no representations as to accuracy, completeness, currentness, suitability, or validity of any information on this site and will not be liable for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display or use. All information is provided on an as-is basis. Any trademarks, if at all displayed on this blog belong to their respective owners.

How to reset forgotten root password in Linux?

The root password for the Linux system can be reset by booting it into the Single User mode which is also termed as Emergency mode or more popularly known as Rescue mode.

If the boot loader installed on your Linux system is GRUB, then please follow the below listed steps to reset the root password.

• Select the line which specifies the kernel to be loaded.
• Press the ‘e’ key to edit the entry.
• Choose second line (the line starting with the word kernel).
• Press the ‘e’ key again to edit kernel entry
• Append the letter ‘S’ or word ‘single’ to the end of the line.
• Press the [ENTER] key
• Press the ‘b’ key to boot the Linux kernel into single user mode

After the booting process completes, mount the ‘/’ and ‘proc’ partitions using the below listed commands.

# mount -t proc proc /proc
# mount -o remount,rw /

Issue the 'passwd' command to change the root password.

Finally, reboot the system employing the below commands.
# sync
# reboot

If the boot loader installed on your Linux system is not GRUB but LILO, then please follow the below mentioned steps to reset the root password.

• At the Boot: prompt displayed by the LILO boot loader, type linux single and press the [ENTER] key:
• Allow the system boot and when it displays the # prompt, type passwd to reset the root password.
• Finally, reboot the system by issuing sync followed by the reboot command.

Disclaimer

All data and information provided on this site is for informational purposes only. sks8.wordpress.com or skumar.co.nr makes no representations as to accuracy, completeness, currentness, suitability, or validity of any information on this site and will not be liable for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display or use. All information is provided on an as-is basis. Any trademarks, if at all displayed on this blog belong to their respective owners.

What is the difference between exit() and _exit() system call?

Should I employ exit(int status) or _exit(int status) to exit() from a child process? Does this question haunt you quite often? If so, this post is for you.

The exit() method which is part of the C library routines calls the kernel system call _exit() internally.

The responsibility of the kernel system call _exit() includes asking the kernel to close any open descriptors, free the memory used by the process and perform terminating process clean-up. Whereas the exit() call takes care of flushing the I/O buffers and perform additional clean-up before invoking _exit() internally.

In simpler words, exit() performs clean-up related to user-mode constructs in the library, and calls user-supplied cleanup functions whereas _exit() performs only the kernel level cleanup for the process.

It’s always advisable to use _exit(int status) in a child because employing exit(int status) can lead to stdio buffers being flushed twice, and temporary files being unexpectedly removed.

Finally, exit(int status) is defined in stdio.h and _exit(int status) is defined in unistd.h file.

Disclaimer

All data and information provided on this site is for informational purposes only. sks8.wordpress.com or skumar.co.nr makes no representations as to accuracy, completeness, currentness, suitability, or validity of any information on this site and will not be liable for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display or use. All information is provided on an as-is basis. Any trademarks, if at all displayed on this blog belong to their respective owners.