How do I use conditional statements in shell scripts?

How do I use conditional statements in shell scripts?

You can use conditional statements like if, else, and elif in shell scripts to control the flow of execution based on conditions.

Can you give me an example of an if statement?

Sure! Here's a simple example:

if [ -f "file.txt" ]; then
    echo "File exists."
else
    echo "File does not exist."
fi

What about using multiple conditions?

You can use && for AND and || for OR. For example:

if [ -f "file.txt" ] && [ -r "file.txt" ]; then
    echo "File exists and is readable."
fi

How do I check for string equality?

You can use the = operator for string comparison. For example:

if [ "$string1" = "$string2" ]; then
    echo "Strings are equal."
fi