In this example the logicalORoperator combines two conditions and only one of them or both can be true for the condition to be overall true and the code to execute. We also demonstrate the-geoperator for greater or equal numeric comparison in the above example. The script is working as exp...
This if statement is also called as simple if statement. If the given conditional expression is true, it enters and executes the statements enclosed between the keywords “then” and “fi”. If the given expression returns zero, then consequent statement list is executed. if then fi example: ...
In your bash script, you have the flexibility to incorporate multiple if statements as needed. Furthermore, it is entirely possible to nest an if statement within another if statement, creating what is referred to as a nested if statement. Syntax of nested if statement if condition1 then Code...
Conditional tests can be performed in Bash Scripting using the "if" statement, where the statement inside the "if" block is executed only if the specified condition is met. How can I check for a existing file in a bash script? Use the if [ -f "file.txt" ]; then command to check ...
除了上面的./example.sh的方法,另一种运行bash script的方式是bash example.sh。 变量 如果仅仅是想要运行一连串的命令,似乎我手打也行啊,没必要专门写个bash script。这时候,就需要变量了。有了变量,他就可以干很多事了。 变量赋值和其他很多语言很相似(比如python),是一种dynamical typing的方式赋值,而想要调用变...
Conditions in bash scripting (if statements) - Linux Academy Blog https://linuxacademy.com/blog/linux/conditions-in-bash-scripting-if-statements/ Table of conditions The following table list the condition possibilities for both the single- and the double-bracket syntax. Save a single exception, th...
Related:How to Check If a File Exists in Linux Bash Scripts A Simple If Statement Example This is the canonical form of the simplestifstatement: if [ this-condition-is-true ] then execute-these-statements fi If the condition within the text resolves to true, the lines of script in thethe...
‘elif’ is used to define else if condition in bash. Create a file named, ‘elseif_example.sh’ and add the following script to check how else if is defined in bash script. #!/bin/bash echo "Enter your lucky number" read n if [ $n -eq 101 ]; then echo "You got 1st prize"...
Using else if statement in bash You can use an elif (else-if) statement whenever you want to test more than one expression (condition) at the same time. For example, the followingage.shbash script takes your age as an argument and will output a meaningful message that corresponds to your...
Script: #!/bin/bashecho"Enter your marks out of 100: "readmarksif[$marks-gt 100];thenprintf"You have entered incorrect marks:$marks\n "fi Output: Use theifStatement With Multiple Conditions In the previous example, we used a single condition. We can also apply multiple conditions and sep...