NAME: Hussnain Arshad SAP ID: 70068110 COURSE: OPERATING SYSTEMS (LAB) DEPARTMENT OF SOFTWARE ENGINEERING This study source was downloaded by 100000855323782 from CourseHero.com on 10-27-2022 23:28:56 GMT -05:00 https://www.coursehero.com/file/95248106/Hussnain-OS-Lab-5pdf/ LAB#5 1: Add a user ‘uol1’ and show default directory of this user. umair@umair-linux:~$ sudo useradd uol1 [sudo] password for umair: umair@umair-linux:~$ pwd /home/umair 2: Add a user ‘uol2’ and the default directory of this user should be /home/admin umair@umair-linux:~$ sudo useradd -m uol2 umair@umair-linux:~$ ls -la /home/uol2/ total 34 drwxr-xr-x 4 uol2 uol2 4096 Mar 18 14:07 . drwxr-xr-x 4 root root 4096 Mar 18 14:07 .. -rw-r--r-- 1 uol2 uol2 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 uol2 uol2 3771 Feb 25 2020 .bashrc drwxr-xr-x 5 uol2 uol2 4096 Jan 3 21:33 .config -rw-r--r-- 1 uol2 uol2 22 Sep 8 2011 .gtkrc-2.0 -rw-r--r-- 1 uol2 uol2 516 Dec 18 2013 .gtkrc-xfce drwxr-xr-x 3 uol2 uol2 4096 Jan 3 21:33 .local -rw-r--r-- 1 uol2 uol2 807 Feb 25 2020 .profile 3: Add a user ‘uol3’ and give this user a default password. Now switch to ‘uol3’ and change the password of ‘uol3’. umair@umair-linux:~$ sudo useradd uol3 umair@umair-linux:~$ sudo passwd uol3 New password: Retype new password: This study source was downloaded by 100000855323782 from CourseHero.com on 10-27-2022 23:28:56 GMT -05:00 https://www.coursehero.com/file/95248106/Hussnain-OS-Lab-5pdf/ passwd: password updated successfully 4: lock the user ‘uol3’ and try to login from this user. umair@umair-linux:~$ usermod -L uol3 usermod: Permission denied. usermod: cannot lock /etc/passwd; try again later. umair@umair-linux:~$ sudo usermod -L uol3 umair@umair-linux:~$ su -l uol3 Password: su: Authentication failure 5: Unlock the user ‘uol3’ and try to login from this user again. umair@umair-linux:~$ usermod -U uol3 usermod: Permission denied. usermod: cannot lock /etc/passwd; try again later. umair@umair-linux:~$ sudo usermod -U uol3 6: Add ‘terminal’ to your taskbar (shortcut). 7: Add a user ‘uol4’ and give this user a default password. Now enforce the user to change the password within 2 months. umair@umair-linux:~$ sudo useradd -e 2021-04-01 uol4 8: Give a warning to ‘uol4’ before 5 days of ending date of changing the password. umair@umair-linux:~$ sudo chage -W 5 uol4 9: Show the general information regarding Q7 and Q8 on your terminal. umair@umair-linux:~$ sudo chage -l uol4 Last password change This study source was downloaded by 100000855323782 from CourseHero.com on 10-27-2022 23:28:56 GMT -05:00 https://www.coursehero.com/file/95248106/Hussnain-OS-Lab-5pdf/ : Mar 18, 2021 Password expires : never Password inactive : never Account expires : Apr 01, 2021 Minimum number of days between password change :0 Maximum number of days between password change : 99999 Number of days of warning before password expires :7 10: Add expiry date (01 December 2017) to the user ‘uol4’. umair@umair-linux:~$ sudo chage -E 2017-12-01 uol4 [sudo] password for umair: This study source was downloaded by 100000855323782 from CourseHero.com on 10-27-2022 23:28:56 GMT -05:00 https://www.coursehero.com/file/95248106/Hussnain-OS-Lab-5pdf/ Powered by TCPDF (www.tcpdf.org)
