In MATLAB, you can write a for loop using the following syntax:

for index = start:increment:end
   % Code to be executed
end

Here's an example that prints the numbers 1 to 5:

for i = 1:1:5
   disp(i);
end

In this example:

• i is the index variable.
• 1 is the start value.
• 1 is the increment value (you can also use other values, like 2).
• 5 is the end value.
• disp(i) is the command that will be executed for each iteration of the loop. In this case, it displays the value of i.

You can adjust the start, increment, and end values to suit your specific needs.