Some users will eat lot of space in the system by storing unwanted files. This bash script will help you find which folder using more space.
Open a terminal
Then cut & Paste the script
for f in * ; do if [ -d "$f" ]; then du -sh “$f” ; fi done | sort -n
When You use ’sudo’ command it will ask for password in First time and will remember password for 15 minutes. It is a security hole for sensitive systems.
You can change sudo Password Remembering Time in Ubuntu .
Open a terminal and type
$ sudo visudo
In Ubuntu, visudo uses nano text editor, and what it does is edit the / etc / sudoers.tmp
Check for the line as shown below
Defaults env_reset
Change it to
Defaults env_reset , timestamp_timeout = X
Where X is the time that we remember the sudo password, if we put 0 (zero) that we always get the request.
Finally to save the changes, press Ctrl + X and said yes.
If your Ubuntu machine is nor working properly after a partial upgrade and have a have broken the system dependencies tree, You can recover it by using a simple command that reinstalls all the installed packages and reconfigures them automatically.This will take a long time to complete.
$sudo dpkg-reconfigure -phigh -a
You can try the following command first
$ sudo apt-get install -f
DNS (Domain Name Server) is basically a system to convert domain names into IP addresses. Domain names are easier to understand, memorize and write for humans while computers only use IP addresses to communicate.
In most of the case, Internet Service Providers providing the DNS servers to the customer. User can change it, the reasons to switch to other DNS servers for performance, privacy and censorship. Most of the people using OpenDNS as the first alternative, But Now Google Public DNS is available and the performance is much better.
Now How to set up Google Public DNS in Ubuntu
Select System–>Preferences–>Network Connections
Select the type of connection you have. For this example, we will use ‘Wired’.
Under ‘Wired’, highlight ‘Auto etho’ and click on ‘Edit’.
Now, Inside ‘Editing Auto etho‘ window, click on ‘IPv4 Settings’ tab. and select ‘Automatic (DHCP) address only‘
Put these nameserver addresses as your ‘DNS Servers’:8.8.8.8, 8.8.4.4
Click ‘OK’ and reboot your machine.
For avoiding your settings get revoked after reboots, you may need to make the following changes via the command line:
$ sudo cp /etc/resolv.conf /etc/resolv.conf.auto
$ gksudo gedit /etc/dhcp3/dhclient.conf
# append the following line to the document
prepend domain-name-servers 8.8.8.8, 8.8.4.4;
# save and exit
$ sudo ifdown eth0 && sudo ifup eth0
Gboard is a small simple device for help gmail users. It is a USB device. The Gboard has 19 buttons and each corresponds with a task in Gmail. From the board, you can search, go to results, go to starred mail, compose a message, reply, reply to all, forward a message, star and archive messages, delete and mark messages as spam, flip through your messages , select messages and go right to the inbox.
