How do I write a for loop in bash

bash for-loop iterator
John Meagher picture John Meagher · Sep 8, 2008 · Viewed 103.4k times · Source

I'm looking for the basic loop like:

for(int i = 0; i < MAX; i++) {
  doSomething(i);
}

but for bash.

Answer

Rob Rolnick picture Rob Rolnick · Sep 8, 2008

From this site:

for i in $(seq 1 10);
do
    echo $i
done

Related questions

How do I iterate over a range of numbers defined by variables in Bash?

How do I iterate over a range of numbers in Bash when the range is given by a variable? I know I can do this (called "sequence expression" in the Bash documentation): for i in {1..5}; do echo $i; done Which …

Read More
How to loop over files in directory and change path and add suffix to filename

I need to write a script that starts my program with different arguments, but I'm new to Bash. I start my program with: ./MyProgram.exe Data/data1.txt [Logs/data1_Log.txt]. Here is the pseudocode for what I want …

Read More
How to add leading zeros for for-loop in shell?

I have a basic number for loop which increments the variable num by 1 over each iteration... for (( num=1; num<=5; num++ )) do echo $num done Which outputs: 1 2 3 4 5 I'm trying to make it produce the output (add leading zero before $num): 01 02 03 04 05 …

Read More