Month: May 2018

Install GIMP on Ubuntu

This post introduces how to install GIMP on Ubuntu.

GIMP (GNU Image Manipulation Program) is a freely distributed software for manipulating images. We can easily optimize the image, convert their type using GIMP. It provides the power and flexibility to designers to transform images into truly unique creations. GIMP is the cross platforms application and available for Linux, Windows, MAC OS, and FreeBSD etc.

For Ubuntu, you can get it for free using your Software Center. Open the Software Center, search for “gimp”, and then install the “GIMP Image Editor”. But below we provide how to install and uninstall GIMP from command line.

Install GIMP

For Ubuntu, you can use the following command to install GIMP on Ubuntu

You are required to add an external apt repository in your system to install Gimp on Ubuntu system. After adding the repository, install Gimp using the following set of commands. It will install or upgrade the latest packages of Gimp on your Ubuntu Linux system.

sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp

Launch GIMP Application

You can search Gimp using GNOME search box and launch it.

Alternatively, (on Ubuntu and RedHat) you can also launch gimp application using the command line as follows:

$ gimp &

Uninstall GIMP

If you no longer need of Gimp and want to remove from your system, Use the following command to remove all Gimp application and associated data from your system.

$ sudo apt-get autoremove gimp gimp-plugin-registry

Revert to GIMP stable release

Since GIMP 2.9 is unstable development release, there might be bugs and stability issues. You can easily revert to the stable GIMP 2.8.16, the stock version in Ubuntu 16.04 by running the commands below in terminal:

sudo apt install ppa-purge 
sudo ppa-purge ppa:otto-kesselgulasch/gimp-edge

 

References:

How to Install GIMP 2.10 on Ubuntu 18.04 LTS

HomeNewsThemesHowto TipsHow to Install The Latest GIMP 2.9.5 in Ubuntu 16.04

 

Screenshot shortcuts on Mac

The Mac OS has always made it easy to capture a screen shot. (A screen shot is an image of your computer desktop or an active window.)

This post  provides a summary of all the keyboard shortcuts you can use to capture your screen on Mac. (Check HERE for screenshot shortcuts on Linux.)

  • Entire screen

 Command + Shift + 3

The screen shot will be automatically saved as a PNG file on your Desktop with the filename starting with “Picture” followed by a number (e.g., Picture 1, Picture 2, …)

 

Command + Control + Shift + 3

The screen shot will be copied to your clipboard, so you can paste it into another program suchas PowerPoint, Word, GIMP.

 

  • Customized area of screen

Command + Shift + 4

A cross-hair cursor will appear and you can click and drag to select the area you wish to capture. When you release the mouse button, the screen shot will be automatically saved as a PNG file on your Desktop following the same naming convention as explained on the first tip above.

 

 Command + CTRL + Shift + 4

A cross-hair cursor will appear and you can click and drag to select the area you wish to capture. When you release the mouse button, you can paste the screen shot to another application.

 

  • Active window

Press and hold

Command + Shift + 4

then tap on the Spacebar.

The cursor will change to a camera, and you can move it around the screen. As you move the cursor over an application window, the window will be highlighted. The entire window does not need to be visible for you to capture it. When you have the cursor over a window you want to capture, just click the mouse button and the screen shot will be saved as a PNG file on your Desktop.

 

Press and hold

Command + CTRL + Shift + 4

then tap on the Spacebar.

The cursor will change to a camera, which you can move around the screen. As you move the cursor over an application window, the window will be highlighted. The entire window does not need to be visible for you to capture it. When you have the cursor over a window you want to capture, just click the mouse button and you can paste the screen shot into another application.

 

  • Screenshot with tooltip

 Command + SHIFT + 4

The trick is simple, you have to keep press (⌘+SHIFT) first. Then hover mouse to make tool tip appear and press (4).

         Simple way to do this : a small trick

 1. open you screen , for which you want to take screen shot 
 2. point to tool-tip , it will show that tooltip .
 3  then capture whole screen by Command + Shift + 3 
 4. preview above captured image , and expand to full screen 
 5. now use Command + Shift + 4 to capture tool-tip

 

 

 

  • References and Further reading list

 

 

 

 

 

Monitor CPU temperature from terminal on Ubuntu

This post provides instructions on how to monitor CPU emperatures from command line on Ubuntu.

Step 1: Install lm-sensors using the following command in your terminal

$ sudo apt-get install lm-sensors

Step 2: type the following command in terminal

$ sudo sensors-detect

 You will be asked a few questions. Answer Yes for all of them.

Step 3:  type sensors in your terminal to get your CPU temperature.

$ sensors

Step 4: You can run the following command to see temperature values updating each second

$ watch sensors
$ watch -n 10 sensors  

# this will update the temperature values every 10 seconds. You got the idea -- you can change the number 10 to any seconds you would like to see the updated temperature values.

Step 5: use Ctrl + C to terminate.

 

For more commonly used Linux commands, check my other posts at here  and here .