Delete the first n folders sorted by time in the current folder in Linux

Today, someone in the group asked how to delete the first n folders sorted by time under a folder, which only contains folders. I wrote a script, and someone in the Group wrote a script, which is now sorted out for future reference.

Personal:

#! /Bin/sh

Ls-LRT | awk '{If (NR <4 & Nr! = 1) printf ("RM-RF % s \ n", $8)} '> rm2.sh

Chmod 755 rm2.sh

./Rm2.sh

Rm rm2.sh

Master's:

#! /Bin/sh

For I in 'LS-lthr | head-3 | grep-V 'total''

Do

Rm-RF $ I

Done;

From the above two scripts, we can see that the gap between the two is so big. I also need to continue to study Linux scripts and move towards the goal of a master.