Coding Tricks

 If you are like me - ultra paranoid, you are not happy with one password. You want to change the password frequently (before the hacker some how solves it ;) ). chage is the command for you. chage - there is no n here - determines after how many days the password of a user expires.  This is what man page says about it          The chage command changes the number of days between password changes and the date of the last password change. This information is used by  the system to determine when a user must change his/her password. You can set number of days after which password expires, when do you want to be prompted for it etc.  $sudo chage username [sudo] password for username: Changing the aging information for username Enter the new value, or press ENTER for the default     Minimum Password Age [0]:     Maximum Password Age [10]:     Last Password Change (YYYY-MM-DD) [2021-08-26]:     Password Expiration Warning [1]:     Password Inactive [-1]:     Account Expiration Date (YYYY-M

 Let us see if you can solve this puzzle. You remember the rules! You have to get 100 as sum of every row and sum of every column.  If you feel you can solve it in no time, why don't you download the app, and solve other levels too.

 The number game Shataka is published. The game is to rearrange 9 numbers in a grid to get a sum of 100 in rows and in columns. I think you will like it. Install it now a nd see for yourself