Q1. I have a file called file1.txt and it have 4 columns like date, filename, space and count.ex: Date  Filename      space countnov4  abc_20161104  3.2M  1220nov3  xyz_20161103  2.3M  2679nov4  mnp_20161104  0.9M   234I want the output on that day like belowNov4 abc_20161104 3.2M 1220Nov4 mnp_20161104 0.9M 234
how to compare one column with another column of a file in unix?
text processing