Shell Programming and Scripting

Hi All,

I have a requirement where in I have an input as follows:-
input=1-4,6,8-10,12-15

I need to explode this range into an output file as follows:-
1
2
3
4
6
8
9
10
12
13
14
15

My input may vary like 1,5-9,11-13,15-17.......
So depending on the input the output file should have the required number of records.

How can this be done? Please help.

Thanks & Regards,
Rony

Use awk.

Code:

input='1-4,6,8-10,12-15'
echo $input | awk -F, '{for(i=1;i<=NF;i++){n=split($i,a,"-");for(j=a[1];j<=a[n];j++)print j}}'

Thanks you very much danmero
It works perfect for all the scenarios like 1-4,6... or 1,4-6,....
Now I need analyse what your code is doing.

With zsh:

Code:

setopt braceccl
eval print -l $(printf "{%s}\n" $=input:gs/-/../:gs/,/\ )