How-to-take-screenshot-from-terminal-and-automate-it-in-Linux,Mac&Windows

How to take screenshot from terminal and automate it in Linux, Mac & Windows

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1. Linux 

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Scrot :-

• It is a opensource software for taking screenshot from terminal. You can change the image quality and also you can change the format of image.
• We can capture specific area and the whole screen is well.
• We can also automate the scrot from cron to automatically take a screen at an interval of time.
• This utility is useful for monitoring employees desktop.
• Scrot is available in all linux distribution like Fedora, Ubuntu, Debain,etc. 

1. To install scrot open the terminal enter the following command :-

yum install scrot -y                   For Fedora/CentOS/Redhat

sudo apt-get install scrot -y          For Ubuntu/Debian

1.1. If you wish you can install it from source code as well :-

wget http://linuxbrit.co.uk/downloads/scrot-0.8.tar.gz
tar -xvf scrot-0.8.tar.gz
cd /scrot-0.8
./configure
make
su -c "make install"

Redhat user need to specify the prefix location with configure command:-

./configure --prefix=/usr

1.2. How to use scrot take screenshot :-

Some of the options are as follow:-

scrot /home/techs2resolve/Desktop.jpg            Full-Screenshot
scrot -s /home/techs2resolve/Window.jpg          Selected window "scrot -s" 
scrot -q 90 /home/techs2resolve/Quality.jpg      For image quality "scrot -q"

1.3. Now we have played with it lets automate the task in the background:-

Create a file called screen.sh :-

nano screen.sh

First of all we need to create a bash script :-

#!/bin/bash
DISPLAY=:0 scrot -q 20 /home/techs2resolve/Pictures/techs2resolve-%Y-%m-%d-%H_%M.jpg

Change the permission :-

chmod 777 screen.sh

Now It is important :- You have to open your user crontab don't open it from root.

*/1 * * * * sh /home/techs2resolve/screen.sh

The above cron will run at every 1 min and the screenshot will be save inside your Pictures folder of your home directory.

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2. MAC

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Screencapture :-

In Mac OSX screencapture utility comes by default. Just like scrot we will do for mac with the help of scripting.

1.Go to the Finder :-

Navigate to the Applications and launch Terminal :-

2. Now create the folder on Desktop "techs2resolve" :-

mkdir ~/Desktop/techs2resolve

2.1 Now run the following script on the terminal :-

while [ 1 ];do vardate=$(date +%d\-%m\-%Y\_%H.%M.%S); screencapture -t jpg -x ~/Desktop/techs2resolve/$vardate.jpg; sleep 10; done

where 
vardate = is the variable for date and time 
jpg        = is the format to save the screenshot
~/Desktop/techs2resolve = is the location where the screenshot go
sleep     = 10 sec time duration 
done      = completes while loop

3. Now we have to automate the screenshot with "Automator" :-

 3.1 After you have launched the Automator => Select Application :

3.2 Then Goto Utilities => Double click on "Run Shell script" :-

3.3 After that paste the script here in the box :-

3.4 Now Save the file as an "app" in Documents :-

 3.5. Now lets integrate it in startup :-

Launch System Preference => Users & Group => Select User

Goto "Login Items" => 
Click on the "+" To add the app from Documents

That's it now restart your system to check service is running in your panel top right side.

That' it now enjoy using it ,
Please Do Likes,Comment and Share

Posted by : Restartkar 02:27 Tags : CentOS , Fedora21 , Linux , Mac , Ubuntu-12.04

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