How do I use multiple IF statements in bash?
Bash else-if statement is used for multiple conditions. It is just like an addition to Bash if-else statement. In Bash elif, there can be several elif blocks with a boolean expression for each one of them. In the case of the first ‘if statement’, if a condition goes false, then the second ‘if condition’ is checked.
How do you write multiple conditions in an if statement in Unix?
To use multiple conditions in one if-else block, then elif keyword is used in shell. If expression1 is true then it executes statement 1 and 2, and this process continues. If none of the condition is true then it processes else part.
How do you add two conditions in if?
You can have two conditions if you use the double bars( || ). They mean “Or”. That means only ONE of your conditions has to be true for the loop to execute. If you want all of conditions to be true use && .
What does %% mean in Bash?
So as far as I can tell, %% doesn’t have any special meaning in a bash function name. It would be just like using XX instead. This is despite the definition of a name in the manpage: name A word consisting only of alphanumeric characters and under- scores, and beginning with an alphabetic character or an under- score.
How to include multiple conditions with or operator in Bash?
The syntax to include multiple conditions with OR operator is For compound expressions, following if syntax is allowed. Please observe that the condition has double square brackets. In the following example, we demonstrate the usage of if statement with a simple scenario of comparing two strings. Note : In bash, respect each token/literal.
What is if statement in Bash?
Bash IF statement is used for conditional branching in the sequential flow of execution of statements. We shall learn about the syntax of if statement and get a thorough understanding of it with the help of examples. Syntax of if statement. A simple If statement comparing strings. if statement comparing numbers. If expression with AND Condition.
Can you have multiple IF statements in Bash?
If statements can be nested within if statements in Bash. Multiple if statements can be nested inside another if statement. Something like this: If both CONDITION_1 and CONDITION_2 evaluate to True, COMMANDS_1 will be run. If CONDITION_2 evaluates to False while CONDITION_1 remains True, COMMANDS_2 will be executed.
What is the basic syntax of an IF statement?
The basic syntax of an if statement is the following: The if statement is composed of the if keyword, the conditional phrase, and the then keyword. The fi keyword is used at the end of the statement. The COMMANDS gets executed if the CONDITION evaluates to True. Nothing happens if CONDITION returns False; the COMMANDS are ignored.