check the ip address
Check the hidden ip address which are not correctly configured
Change name servers of network
check gateway address
Find all files with in the system
Find all file and folder count
Find the total number of files/folder in a folder
change password of current user
ctrl + c to quit command
This command shows listing. l for long format, h for human readable, A for hidden files.
get list and permissions of the directories
Get directory listing & size
Get hard disk space information
Shutdown is the command and -r is a flag which is used by the shutdown command. In this case the -r means reboot. 0 is the time in minutes before the shutdown occurs.
How to change keyboard language layout?
sudo nano /etc/default/keyboard
Change the “gb” to the two letter code for your country.
Reboot the system to take effect
start the desktop
Install chromium browser
Make the browser more visually appealing enter the following
List all the usb connecting devices.
Use the Ctrl-Alt-F1 shortcut keys to switch to the first console.
To switch back to Desktop mode, use the Ctrl-Alt-F7 shortcut keys.
How to correct wrong server time
Get the current time
Correct & sync the server time https://help.ubuntu.com/lts/serverguide/NTP.html
In this example, filename.tar represents the file you are creating and files/directories represents the files or directories you want to put in the new file.
Compressed tar files are conventionally given the extension .tgz and are compressed with gzip.
Copy all files in a tar file and also gzip it
unzip a compressed file
unzip an unrar file.
unrar x <filename>
copy file from server to server
Convert tar.gz to tar file
Unzip a gz file
copy and remove files from destination
change the ownership of a file or a directory
View cronjob file
edit cronjob file
Edit user cron jobs
Restart crontab service
find process id
-9 is special Kill signal, which will kill the process.
delete all mails from a username
list all fonts on ubuntu
install font on ubuntu
print history in a file
show file content
Check user group
nmap port scanner
Show possible locations of php
Change file permissions
Change file owner/group
mark a file executable
mount shared folder
Sync folder or file to another server
upload files via ftp
Show apache compiled modules
Install php extension to see php error trance
How do I change the language via a terminal?
Check Ubuntu current version/release/codename
change password for webmin, if password lost
Check last login of user on server