I want to print lines based on value in particular column that appear only once. In example below, val2 and val3 appear only once.
Input
val1,1
val2,2
val1,3
val3,4
Output
val2,2
val3,4
uniq -u
does not seem to have option of specifying a column. I also tried sort -t, -k1,1 -u
but that prints every row once.