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5w33t45 Archive

How to check OpenSSH version on Linux?

Using Linux – let’s open terminal and enter ssh -v localhost or ssh -V to check the OpenSSH version which is currently installed. __________________________________________________________ $ ssh -v localhost OpenSSH_7.9p1, LibreSSL 2.7.3 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 48: Applying options for * debug1: Connecting to localhost port 22. ssh: connect to host localhost port 22: Connection refused

How to create an Array List with Java?

To store dynamically-sized elements in Java, we used ArrayList. Whenever new elements are added to it, its increase their size automatically. Key Points of an ArrayList An ArrayList is a re-sizable array, also known as a dynamic array. It raises its size according to new elements and decreases the size when the elements are removed.

How to return lambda using Java 8?

The first thing, which I am going to show you – how you can easily return lambda as a return type. This is example is very simple and you could adjust it regarding your needs with your domain objects, etc. We are using java.util.function.Function<T, R> interface to return function from our method. T – means

How to Force Quit Unresponsive Mac OS Applications?

Problem This is important not only for Windows users :). Sometimes applications become unresponsive in Mac OS as well. There are several ways, how to kill unresponsive application. Here we will cover the easiest solutions, how to kill unresponsive applications in Mac OS. Solution Hit CMD+Option(aka. Alt)+Escape Then you will be prompt to select an application, which

How to compare Strings in Java?

Problem There are many ways how to compare strings in Java and most of them are different. Here we will cover these cases: Using .equals() method; Using .compareTo() method; Using == operator. Solution Let’s check what we can compare using .equals() / .equalsIgnoreCase() methods. If you are newbie in programming / Java – I am almost sure that this

How to reset Windows 10?

Problem Why do you need to reset Windows 10? Sometimes your computer becomes very slow, because you have many unused applications installed and store a lot of unused stuff in your hard disk. Some people like to flush everything and start using Windows from scratch, like my sister. You want to sell your computer and

How to remove tag from a deleted file?

Problem Let’s say you deleted a file from CVS. Next day you see that you need to remove tag(s). Usually you click on file, select “Tags” and remove it. But how could you remove a tag from a deleted file? Solution You should execute a cvs command. Some CVS clients have GUI, for example TortoiseCVS

How to read UTF8 file with BOM?

Wikipedia about UTF8 BOM The byte order mark (BOM) is a Unicode character, U+FEFF byte order mark (BOM), whose appearance as a magic number at the start of a text stream can signal several things to a program consuming the text:[1] What byte order, or endianness, the text stream is stored in; The fact that the