Control structures in shell scripting allow you to control the flow of execution based on conditions, perform repetitive tasks, and make decisions. The common control structures in shell scripting are:
1. if-else Statement:
* The if-else statement allows you to execute different code blocks based on a condition.
* Syntax:
```
bash`if condition
then
# Code block executed if the condition is true
else
# Code block executed if the condition is false
fi`
```
* Example:
```
bash`# Check if a file exists and display a message accordingly
if [ -f "myfile.txt" ]
then
echo "File exists"
else
echo "File does not exist"
fi`
```
2. for Loop:
* The for loop is used to iterate over a sequence of values or a list of items.
* Syntax:
```
bash`for variable in sequence
do
# Code bloc....
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