$ figlet -f slant "Big Data" -c | lolcat && figlet -f digital -c "Drive into DataScience" | lolcat
How to display the above text on terminal:
Useful commands:
How to check the number of directories created by the user on terminal:
csedept@cse:~$ ls /home
csedept hdoop
csedept hdoop
csedept@cse:~$ ls -l /home/hdoop/
total 16
-rw-r--r-- 1 hdoop hdoop 8980 Dec 18 16:26 examples.desktop
drwxr-xr-x 14 hdoop hdoop 4096 Dec 18 16:55 hadoop
How to enter into the root terminal:
csedept@cse:~$ sudo -s
root@cse:/home/csedept#
How to use id command on the terminal:
csedept@cse:~$ id
uid=1000(csedept) gid=1000(csedept) groups=1000(csedept),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),116(lpadmin),126(sambashare)
csedept@cse:~$ id -u
1000
csedept@cse:~$ id -n -u
csedept
csedept@cse:~$ sudo adduser duck
[sudo] password for csedept:
Adding user `duck' ...
Adding new group `duck' (1001) ...
Adding new user `duck' (1001) with group `duck' ...
Creating home directory `/home/duck' ...
Copying files from `/etc/skel' ...
New password:
Retype new password:
passwd: password updated successfully
Changing the user information for duck
Enter the new value, or press ENTER for the default
Full Name []:duck
Room Number []:
Work Phone []:
Home Phone []:
Other []:
Is the information correct? [Y/n] y
csedept@cse:~$ ls /home/
csedept duck hdoop
How to switch the user using su command:
csedept@cse:~$ su - duck
Password:
duck@cse:~$ logout
csedept@cse:~$
How to recover the password of the user :
1. shift +esc
2. select the option : Advanced option for ubuntu
3. choose the recovery mode
now we can see the root there we need to type
4. mount -n -o remount, rw /
5. ls /home
6. passwd <username> what ever the name seen after root that is our username
reboot
