In this chapter we shall look at the below topics: 7.1 Case Statement 7.2 Break statement 7.3 Continue statement 7.1 Case Statement case statement is used when there is multiple case of if-else statements. Syntax: case <expression> in pattern_1 ) statements;; pattern_2 ) statements;; *) default_condition;; …
If there is a need to execute set of statements repeatedly, then we need to use looping statements. Below is the list of statements supported by shell script. 6.1. While Loop 6.2. Until Loop 6.3. For Loop 6.4. Select Loop 6.1. While Loop While loop is …
While writing a program, there exists a situation where we need to execute a set of statements based on some conditions. In this situation we make use of conditional statements. With the help of conditional statements, we are able to branch the execution of a program. …
Example 1: Input: , 6 Output: 3 Example 2: Input: , 5 Output: 3 Method 1: By using “lower_bound” STL function. By using “lower_bound” you will get the index of the target if found, if not the index it returns is the correct position to insert …
In this chapter we shall know about some special operators, which makes shell script powerful while writing and executing the scripts. 4.1. Redirectors 4.2. Pipes 4.3. exit status 4.4. Shell Special Variables 4.5. eval command 4.6. sleep command 4.7. trap command 4.1. Redirectors Usually we give …
To read an input from the user, use the “read” command. The read command will take the input from the user and assigns to a variable. Syntax: read <variable_name> example: read website_name read -p option: If you want to display a help text to the user, …
In shell script there is no need to declare a variable before using it. A variable is a name given to memory location, which is used to store a value. The value can be accessed by variable name for further manipulation. In this chapter we shall …
In this introduction chapter, we shall look at below topics 1.1 Now what is a shell script? 1.2 what are the uses of shell script? 1.3 How to create a shell script? 1.4 Writing your first shell script 1.5 How to execute a script? 1.6 Shell …
If the array has duplicates output should be true, else return false if all the array elements are unique. Example: Input: Output: True Input: Output: False Method 1: By using set. As we know that, set contains only unique elements. Hence we insert all the …