ne of the powerful screenshot tool, which not only allow you to take screenshot, of any part of screen, but also allows you to edit the captured image, adding text, hiding private content by pixelating, upload an image to a hosting site and much more. It is written in Perl and available as an open source tool under GNU GPLv3 license.

You can easily install shutter on Ubuntu or Linux Mint with the help of

apt-get command as shown:

$ sudo apt-get install shutter

To create a screenshot through shutter, either open a new session by launching the shutter app, or just select the window to capture from the shutter icon in notification bar.

Linux and UNIX-like systems has environment variable called http_proxy. It allows you to connect text based session and/or applications via the proxy server. All you need is proxy server IP address (URL) and port values. This variable is almost used by all utilities such as elinks, lynx, wget, curl and others commands.

Set http_proxy shell variable on Linux/OS X/Unix bash shell

Type the following command to set proxy server:
$ export http_proxy=http://server-ip:port/
$ export http_proxy=http://127.0.0.1:3128/
$ export http_proxy=http://proxy-server.mycorp.com:3128/
If the proxy server requires a username and password then add these to the URL. For example, to include the username foo and the password bar:
$ export http_proxy=http://foo:bar@server-ip:port/
$ export http_proxy=http://foo:bar@127.0.0.1:3128/
$ export http_proxy=http://USERNAME:PASSWORD@proxy-server.mycorp.com:3128/

How do I setup proxy variable for all users?

To setup the proxy environment variable as a global variable, open /etc/profile file:
# vi /etc/profile
Add the following information:
export http_proxy=http://proxy-server.mycorp.com:3128/
OR
export http_proxy=http://USERNAME:PASSOWRD@proxy-server.mycorp.com:3128/
Save and close the file.

A note about enabling proxy access to a specific user

To enable proxy access for a specific user, add the lines user shell profile. For the default bash shell, the profile is the file .bash_profile. For example, enable proxy access for a specifc user called vivek, type:
$ vi $HOME/.bash_profile
OR
# vi /home/vivek/.bash_profile
Append the following line:
export http_proxy=http://USERNAME:PASSOWRD@proxy-server.mycorp.com:3128/
Save and close the file.

How do I use password protected proxy server using various command line options?

You can simply use wget command as follows:
$ wget --proxy-user=USERNAME --proxy-password=PASSWORD http://path.to.domain.com/some.html
Lynx command has the following syntax:
$ lynx -pauth=USER:PASSWORD http://domain.com/path/html.file
Curl command has following syntax:
$ curl --proxy-user user:password http://url.com/

Basically, API level means the Android version. This defines for which version you are targeting your application and what is going to be the minimum level of android version in your application will run. For setting Minimum level and Maximum level android studio provides two terminologies.

minSdkVersion means minimum Android OS version that will support your app and targetSdkVersion means the version for which you are actually developing your application. Your app will be compatible with all the version of android which are falling between minimum level SDK and target SDK.

How to change API SDK level in Android Studio

For changing the API level in android we have two different Approaches, let’s check both one by one:

Approach 1 To Change SDK API Level in Android Studio:

Step 1: Open your Android Studio, and go to Menu. File >Project Structure.

Step 2: In project Structure window, select app module in the list given on left side.

Step 3: Select the Flavors tab and under this you will have an option for setting Min Sdk Version” and for setting Target Sdk Version”.

You can check the name of version too in the drop down list while selecting the API level that makes the selection more clearer for anyone. Because sometimes remembering numbers is bit messy.

Step 4: Select both the versions and Click OK.

Approach 2 To Change API (Android Version) in Android Studio:

That will be pretty straight forward, but you need to stay very alert while making changes here.

Step 1: if you are project is opened in android option then select open Gradle Scripts > build.gradle(Module: app)

if you are in project View then click on your project folder > app > build.gradle

Step 2: Here you have to change minimum and Maximum sdk level as per your requirement. check the below given code:

defaultConfig {
    applicationId "com.AbhiAndroid.Android.myProject"
    minSdkVersion 14
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}

Step 3: Click on Sync Now and You are ready to go.

Note: If you are choosing the First Approach then you need not to make changes in Gradle. It will automatically update the gradle.

Server side

If you want something easy to re-use or automate, you can use Postgresql's built in

COPY command. e.g.

Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',';

This approach runs entirely on the remote server - it can't write to your local PC. It also needs to be run as a Postgres "superuser" (normally called "root") because Postgres can't stop it doing nasty things with that machine's local filesystem.

That doesn't actually mean you have to be connected as a superuser (automating that would be a security risk of a different kind), because you can use

the SECURITY DEFINER option to CREATE FUNCTION to make a function which runs as though you were a superuser.

The crucial part is that your function is there to perform additional checks, not just by-pass the security - so you could write a function which exports the exact data you need, or you could write something which can accept various options as long as they meet a strict whitelist. You need to check two things:

I've written

a blog post expanding on this approach, including some examples of functions that export (or import) files and tables meeting strict conditions.

Client side

The other approach is to do the file handling on the client side, i.e. in your application or script. The Postgres server doesn't need to know what file you're copying to, it just spits out the data and the client puts it somewhere.

The underlying syntax for this is the COPY TO STDOUT command, and graphical tools like pgAdmin will wrap it for you in a nice dialog.

The psql command-line client has a special "meta-command" called \copy, which takes all the same options as the "real" COPY, but is run inside the client:

\copy (Select * From foo) To '/tmp/test.csv' With CSV

Note that there is no terminating ;, because meta-commands are terminated by newline, unlike SQL commands.

From

the docs:

Your application programming language may also have support for pushing or fetching the data, but you cannot generally use COPY FROM STDIN/TO STDOUT within a standard SQL statement, because there is no way of connecting the input/output stream. PHP's PostgreSQL handler (not PDO) includes very basic

pg_copy_from and

pg_copy_to functions which copy to/from a PHP array, which may not be efficient for large data sets.