Linux split a column into two different columns in a same CSV file [closed]

Answer 1

Here's a nice crazy shell pipeline that actually does what the OP wants :!

#% cat t
11
22
13
,,
aa
bb
cc
,,
ww
kk
ll
,,

Then

#% pr -t -3 -l 4 -s' ' t | sed '$d'
11 aa ww
22 bb kk
13 cc ll

I'm sure there's better commands without resorting to code.

EDIT Thanks to @user000001 for the heads-up on my error making me revisit my solution.