paste | Cheatsheet
merge lines of files
Print two files in columns
Print two files in columns
paste -d '\n' 1 2 | xargs -d '\n' printf '%-50s %-50s\n'
Print two files in table
paste <(printf %s "$varA") <(printf %s "$varB")
paste -d' ' <(cut -f1 1) <(cut -d' ' -f2 2) |column -t