How to create directory ranging from 1 to nth?

Question

In my scenario, I have some photos and I want to keep them seperate. At present I am doing mkdir gallery1 gallery2 gallery3 gallery4 gallery5 gallery6, this is a pain. I think we can do it easily as well. Suppose I want to make directories from gallery7 to gallery50. How would I do that?

Answer 1

With brace expansion.

mkdir gallery{1..50}

Answer 2

You can use brace expansion in a bash script. The following creates the directories gallery7 to gallery50 in the current directory:

#!/bin/bash
for i in {5..70}
do
   mkdir "gallery$i"
done

Answer 3

While there are already fine answers, and you have already started, I'll throw mine in anyway.

I always prefer to make numerically sequenced files with leading zeros, like so:

mkdir $(printf "gallery%02d\n" {1..50})

This will give you directories gallery01 through gallery50. This helps to keep them nicely aligned and in the correct order when sorting.

Answer 4

As the already mentioned brace expansion isn't supported by all shells you can also use seq from the coreutils instead:

for i in $(seq -w 1 50)
do
    mkdir "gallery$i"
done

Option -w is for equal width, i.e. creating gallery01, gallery02 etc.