ProgrammingKnowledge

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Shell Scripting Tutorial for Beginners 20 – use FOR loop to execute commands

2 weeks ago
FOR loop to execute commands. A list of commands is executed for each value in the list. for Loops: Sometimes we want to run a command (or group of commands) over and over. This is called iteration, repetition, or looping. The most commonly used shell repetition structure is the for loop, which has the general […]

Shell Scripting Tutorial for Beginners 19 – FOR loop

2 weeks ago
for Loops: Sometimes we want to run a command (or group of commands) over and over. This is called iteration, repetition, or looping. The most commonly used shell repetition structure is the for loop, which has the general form: for variable in list do command(s) done My Website – www.codebind.com My Blog – goo.gl/Nd2pFn My […]

How to Install PostgreSQL 9.6 & pgAdmin 4 on Windows 10

3 weeks ago
The PostgreSQL installers created by EnterpriseDB are designed to make it quick and simple to install PostgreSQL on your computer. The installer provides:  a distribution-independent PostgreSQL installation.  the popular open-source PostgreSQL administration tool, pgAdmin.  the StackBuilder package manager (used to download and install drivers, tools and applications to complement your PostgreSQL installation). […]

Shell Scripting Tutorial for Beginners 18 – UNTIL loop

3 weeks ago
Until Statements: The until structure is very similar to the while structure. The until structure loops until the condition is true. So basically it is “until this condition is true, do this”. My Website – www.codebind.com My Blog – goo.gl/Nd2pFn My Facebook Page – goo.gl/eLp2cQ Google+ – goo.gl/lvC5FX Twitter – twitter.com/ProgrammingKnow Pinterest – goo.gl/kCInUp Text […]

Shell Scripting Tutorial for Beginners 17 – Read a file content in Bash

4 weeks ago
How do I read a text file line by line under a Linux or UNIX-like system using BASH shell? You can use while..do..done bash loop to read file line by line on a Linux, OSX, or Unix-like system. There are basically three ways to read file content using bash. 1a: While loop: Single line at […]

Shell Scripting Tutorial for Beginners 16 – using sleep and open terminal with WHILE Loops

4 weeks ago
Loop is a block of code that is repeated a number of times. The repeating is performed either a pre-determined number of times until a particular condition is satisfied ( while and until loops) To provide flexibility to the loop constructs there are also two statements namely break and continue are provided. My Website – […]

Shell Scripting Tutorial for Beginners 15 – WHILE Loops

4 weeks ago
Loop is a block of code that is repeated a number of times. The repeating is performed either a pre-determined number of times until a particular condition is satisfied ( while and until loops) To provide flexibility to the loop constructs there are also two statements namely break and continue are provided. My Website – […]

Shell Scripting Tutorial for Beginners 14 – Array variables

1 month ago
An array is a variable containing multiple values. Any variable may be used as an array. There is no maximum limit to the size of an array, nor any requirement that member variables be indexed or assigned contiguously. Arrays are zero-based: the first element is indexed with the number 0. Indirect declaration is done using […]

Shell Scripting Tutorial for Beginners 13 – The case statement Example

1 month ago
For more detailed Tutorial visit – goo.gl/jLzKh2 The case statement is used to execute statements based on specific values. Often used in place of an if statement, if there are a large number of conditions.The variable is compared with the values using the shell wildcards ( ? * […] ) . [a-z] ) specifies a […]

Shell Scripting Tutorial for Beginners 12 – The case statement

1 month ago
For more detailed Tutorial visit – goo.gl/jLzKh2 The case statement is used to execute statements based on specific values. Often used in place of an if statement, if there are a large number of conditions.The variable is compared with the values using the shell wildcards ( ? * […] ) , NOT regular expressions. All […]

Shell Scripting Tutorial for Beginners 11 – Floating point math operations in bash | bc Command

1 month ago
For more detailed Tutorial visit – goo.gl/ZrJh1a bc, for basic calculator (often referred to as bench calculator), is “an arbitrary-precision calculator language” with syntax similar to the C programming language. bc is typically used as either a mathematical scripting language or as an interactive mathematical shell. bc [ -hlwsqv ] [long-options] [ file … ] […]

Shell Scripting Tutorial for Beginners 11 – Floating point math operations in bash | bc Command

1 month ago
For more detailed Tutorial visit – goo.gl/ZrJh1a bc, for basic calculator (often referred to as bench calculator), is “an arbitrary-precision calculator language” with syntax similar to the C programming language. bc is typically used as either a mathematical scripting language or as an interactive mathematical shell. bc [ -hlwsqv ] [long-options] [ file … ] […]