Issue
I have a list of numbers that I want to reverse.
They are already sorted.
35 53 102 342
I want this:
342 102 53 35
So I thought of this:
echo $NUMBERS | ??? | tac | xargs
What's the ???
It should turn a space separated list into a line separated list.
I'd like to avoid having to set IFS.
Maybe I can use bash arrays, but I was hoping there's a command whose purpose in life is to do the opposite of xargs (maybe xargs is more than a one trick pony as well!!)
Solution
You can use printf for that. For example:
$ printf "%s\n" 35 53 102 342
35
53
102
342
$ printf "%s\n" 35 53 102 342|tac
342
102
53
35
Answered By - Mat