I have a file with the below data in test1.txt:nnn   90vvv   80ttt   50sss   20I want to compare the second column value and remove that line. For example, if any of the second column value is less than 20, then delete that line entry. The output of test1.txt should look like:nnn   90vvv   80ttt   50I tried with sed and awk commands, but it's not working for me.
Comparing value and removing the lines of a file
text processing