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6
  • This is simply amazing, any idea how can I exclude bottom -n directories where n is the no. count I want to retain. for ex: I want to keep last 7 days, so it will just remove bottom 7 and then give me the result Commented Apr 10, 2020 at 17:05
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    Use .. | tail -n7 too keep just the last 7, or .. | head -n -7 to keep all but the last 7. Commented Apr 10, 2020 at 17:08
  • That was very helpful. I am marking this as the accepted answer. just one request can you please explain your answer a little bit so that novices like us looking for the same issue can understand it more? Commented Apr 10, 2020 at 17:35
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    @PankajJha where should I start from? What is giving you trouble? The awk thing just prepends a YYYYMMDD (numeric year, month and day) to each line (which sorts the same numerically and lexicographically). Commented Apr 10, 2020 at 17:47
  • Got it now, Thanks Commented Apr 10, 2020 at 18:28