fork(1) download
copy 
  1. #!/bin/bash
  2. s="02/02/2020
  3. 08/25/1998
  4. 03/02/2030
  5. 12/02/2021
  6. 06/19/1960
  7. 01/10/2010
  8. 03/07/2100"
  9. while read line; do
  10.  p1="$(sed -En 's,([0-9])([0-9])/([0-9])([0-9])/.*,\4\3\2\1,p' <<< "$line")";
  11.  p2="${line##*/}";
  12.  if [[ "$p1" == "$p2" ]]; then
  13.    echo "$line"
  14.  fi
  15. done <<< "$s";
Success #stdin #stdout 0s 4396KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
02/02/2020
03/02/2030
12/02/2021
https://ideone.com/V0snjZ
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!