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Videos by: ProgrammingKnowledge

Redis Tutorial for Beginners 7 – Redis Hashes

1 day ago
Redis Hashes are maps between string fields and string values, so they are the perfect data type to represent objects . HDEL key field [field …] Delete one or more hash fields HEXISTS key field Determine if a hash field exists HGET key field Get the value of a hash field HGETALL key Get all […]

Redis Tutorial for Beginners 6 – more commands (SETEX, SETNX, INCR, DECR, MSET…)

2 days ago
SETEX key seconds value Sets the value with the expiry of a key SETNX key value Sets the value of a key, only if the key does not exist SETRANGE key offset value Overwrites the part of a string at the key starting at the specified offset STRLEN key Gets the length of the value […]

Redis Tutorial for Beginners 4 – How To Install Redis On Mac OS X

4 days ago
How To Install Redis On Mac OS X run following commands: ————————————————————- $ mkdir redis && cd redis $ curl -O $ tar xzf redis-4.0.0.tar.gz $ cd redis-4.0.0 $ make $ make test $ sudo make install ————————-Follow——————- My Website – My Blog – My Facebook Page – Google+ – […]

Redis Tutorial for Beginners 3 – How To Install Redis On Ubuntu Linux

6 days ago
There are two ways to install Redis under Ubuntu Linux 1. usind apt-get install —————————————————- $ sudo apt-get install redis-server 2 with followind commands: ————————————————————- $ sudo apt-get update $ sudo apt-get install build-essential tcl $ mkdir redis && cd redis $ wget $ tar xzf redis-4.0.0.tar.gz $ cd redis-4.0.0 $ make $ make […]

Redis Tutorial for Beginners 2 – How To Install Redis On Windows

1 week ago
There are two ways to install Redis under Windows 1. Download the latest Redis .msi file from and install it. 2. You can choose either from these sources or Personally I prepared the first option – Download – Extract the zip to prepared directory – run redis-server.exe – then run redis-cli.exe […]

Redis Tutorial for Beginners 1 – Introduction

1 week ago
Redis is an open source, BSD licensed, advanced in-memory key-value store where keys can contain data structures such as strings, hashes, lists, sets, and sorted sets. Redis Can be used as Database, a Caching layer or a Message broker. Following in the footsteps of other NoSQL databases, such as Cassandra, CouchDB, and MongoDB, Redis allows […]

How to Create First C++ Hello World Project using Xcode (Mac)

1 week ago
In thi video I will explain How to Create First C++ Hello World using Xcode Mac OS X Open Xcode an follow the steps Xcode – File – New – Project – Command Line Tool – Next – Language – C++ You can also freely add C++ files to any other kind of project too. […]

How to install Xcode on a Mac OS X

2 weeks ago
In this video I am going to show you How to Install Xcode in OS X. Xcode is the development and debug environment on the Mac, and provides the required development files for Mac OS X and iOS applications. Register (free of charge) as an Apple Developer at ————————-Follow——————- My Website – My […]

How To Install MySQL on Windows 10

1 month ago
In this post we will learn how to How To Install MySQL on Ubuntu 16.04 LTS. The same procedure can be used for installing MySQL on Ubuntu 14.04 LTS. But first lets see What is MySQL . MySQL is a very popular, open source database. Officially pronounced “my Ess Que Ell” (not my sequel). Handles […]

Shell Scripting Tutorial for Beginners 28 – How to debug a bash script

2 months ago
sh -x script [arg1 …] bash -x script [arg1 …] These give you a trace of what is being executed. Using the set Bash built-in you can run in normal mode those portions of the script of which you are sure they are without fault, and display debugging information only for troublesome zones. Say we […]

Shell Scripting Tutorial for Beginners 27 – Signals and Traps

2 months ago
The trap command provides the script to captures an interrupt (signal) and then clean it up within the script. First the signals described in the original POSIX.1-1990 standard. Signal Value Action Comment ——————————————————————————————- SIGHUP 1 Term Hangup detected on controlling terminal or death of controlling process SIGINT 2 Term Interrupt from keyboard SIGQUIT 3 Core […]

How to Install VirtualBox on Mac OS X

2 months ago
For Mac OS X hosts, Oracle VirtualBox ships in a disk image ( dmg ) file. Perform the following steps: Double-click on that file to have its contents mounted. A window will open telling you to double click on the VirtualBox.mpkg installer file displayed in that window. ————————-Follow——————- My Website – My Blog – […]