Skip to main content

Make searching history in terminal easier

PROBLEM:


This might not be a problem but a feature . But I want to mention this here.
Some times while using the terminal you might know a command which is very big and you've already used it before. That means it's in the terminal history and you want to use it.

It is really irritating to hold the up arrow (↑) until you find it. So, here's an useful feature that allows you to search the history just by typing the first few letters of your command in the terminal.

Let me illustrate what we want to achieve using an example. 


sudo -s
ls
man sudo

If I want to use sudo -s I have to press ↑ three times. Instead of that I can use it by typing S and pressing ↑.

Let's see how to do it.


SOLUTION:


Open a terminal and type the following:


gedit ~/.inputrc
## arrow up
"\e[A":history-search-backward
## arrow down
"\e[B":history-search-forward
Now we can search easily in the terminal.

Popular posts from this blog

INSTALLING MOBILE PARTNER IN LINUX

Most of you who have a Huawei USB modem (data card) might have tried to install mobile partner (dash board) in Linux. Here I will show you how to install mobile partner in Linux. First, you have to copy the folder called Linux in the data card. The files in the data card are not accessible from Linux so copy them from Windows. Now right click the file “install” in the “Linux” folder. Go to the permissions tab and select the check box beside Allow executing as a program. Now open a terminal by pressing CTRL + ALT + Tkeys. Change the working directory to the folder “Linux” by using “cd <path to folder>”. Now type ./install. If you had installed this software in your system before, you will get a prompt: "The software is exist, do you want overwrites? ([Y]/[N])", enter "y" to overwrites or "n" to exit. If you do not had installed this software in your system before, you will get a prompt: "Please input the install path[/usr/local/Mobile_Partner]:"…

How to setup a wifi-hotspot in Ubuntu: The terminal way.

Ubuntu has a "Use as hotspot" mode. But it creates a n ad-hoc network only.Wireless hotspots aren't same as ad hoc networks. Significant difference is there. In short, ad hoc networks aren't supported in most Android, Windows Phone and Blackberry devices (and may be iOS devices too) whereas AP mode Wi-Fi hotspots are.

              It is really simple and easy to setup a hotspot in Ubuntu. We use a tool called ap-hotspot. To install it open a terminal and type the following:

sudo add-apt-repository ppa:nilarimogard/webupd8 sudo apt-get update sudo apt-get install ap-hotspot
             Next, to start the hotspot type the following in a terminal:
sudo ap-hotspot start
It asks you which adapter's internet you want to share, name of the network, password, etc. in an interactive manner. To stop the hotspot type the following n the terminal :
sudo ap-hotspot stop
To configure it type the following in the terminal :
sudo ap-hotspot configure

Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

PROBLEM:
Some times we get the following error while trying yo install software using apt-get or synaptic packaging manager.
E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?


How can we resolve this?
SOLUTION: 
The problem occurs if we are running another applications like synaptic using the directory. So, if this is the case close the applications and try run the command again.
You will also get this message if you forget to use  sudo  when executing an apt command. You can use sudo lsof /var/lib/dpkg/lock to find the process that owns the lock file Then try to kill the process to remove the lock.
**WARNING**
This should be used as last resort. If you use this carelessly you can end up with a broken system.
You can delete the lock file with the following command:
sudo rm /var/lib/apt/lists/lock


You may also need to delete the lock file in the cache directory.
sudo r…