Assuming you have a file: datebook.txt
Please write a command by using ‘sed’ to Delete allspaces on lines that have the second three digits of phone numberas 836.
Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500William Kopf:846-836-2837:6937 Ware Road, Milton, PA 93756:9/21/46:43500
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