How to get the last N number lines in terminal?

The following command will give the last N(int) number lines in terminal, which is scroll-able:









AUTHOR: OBSCURE

Listing only directories in terminal

AUTHOR: OBSCURE

How to find duplicate values, and occurrences count in Oracle Database?

the easiest SQL query which will return the duplicate value and count for a given column is as follows:




















AUTHOR: OBSCURE