Featured post

Modem Manager GUI As Software Dialler For Linux

Modem Manager GUI is a modem usb modem replacement application that you use when surfing, built with gtk + allows this application to run smoothly and efficiently, and this application is very compatible with all modems you use, maybe for some features there may be no can, like sms, ussd, traffic or anything else.

Modem Manager GUI is very compatible with device modem, but may not be compatible with undetectable modem in linux like my modem, most huawei modem for linux. But for some modems such as smartfreen, telkomsel flash, maxis or others can be compatible because it has a plug and play feature in its device.

But Modem Manager GUI does not have dial up feature to connect to the internet, this is different from the built-in modem software that must have dial up feature, but I will try to understand the source code of the application so that I can membuild the newest feature feature, but for the solution you can use wvdial or directly connect to the internet via the sidebar in the network icon, but you must make dial up first in the network settings.

Here are some features of Modem Manager GUI that is highly recommended for use as modem manager substitute mobile partner or other similar software modem built for use in linux.

  • Display using GTK +
  • Easily send and receive messages
  • Send and receive ussd with encoding system.
  • Retrieves modem device information (device info, Operator name, Mode, IMEI, IMSI / ESN, Signal)
  • Scan the available networks
  • Controls transmision data and controls traffic and traffic usage

Well, for that modem manager gui is a great choice for those of you who really want to find modem manager substitute software modem like mobile partner like at this source musikji.

How to Install Modem Manager GUI In Linux

Here are some install options in linux depending on the distro or os used.


yum install modem-manager-gui


sudo add-apt-repository ppa: linuxonly / modem + manager + gui
sudo apt-get update
sudo apt-get install modem-manager-gui


apt-get install modem-manager-gui

Arch Linux

pacman -S modem-manager-gui

Linux Chakra

ccr -S modem-manager-gui

Mageia Linux

urpmi modem-manager-gui


Modem Manager GUI is distributed under the GNU GPL v3 license. To download this application you must agree and comply under the terms of the GNU GPL v3 license.


To participate in the GUI Modem Manager project you can and very much be able to help this project grow, by the way.

Search for bugs and send them to bug tracker.You can translate the words in this app.

Please choose either one of the above or both to participate in the project.

Source Code

You can download the source code for the Modem Manager GUI on its official website through the download link I have provided following the modem manager gui source code download.

Featured post

How to Setting and Configure IP Address on Debian Server Linux

Internet Protocol Address or often abbreviated IP is a series of binary numbers between 32-bit to 128-bit which is used as an identification address for each host computer in the Internet network. The length of this number is 32-bit (for IPv4 or IP version 4), and 128-bit (for IPv6 or IP version 6) indicating the address of the computer on a TCP / IP-based Internet network. Then for IP addressing system is divided into two, namely IP version 4 (IPv4) and IP version 6 (IPv6).

On this occasion I will invite all buddies to discuss about how to configure or configure IP Address on linux debian server. Previously my friend need to prepare linux debian server that has been installed in your PC. well, I will exemplify this tutorial with practice using virtualbox, actually just the same way kok with the original. Okay before What is the purpose of Addressing IP Address it? So, the purpose of IP addressing is intended to computer computers (Server and Client) can be connected to each other.

Okay we just start from turning on the computer that has been installed Debian Server. Then we will give the IP address for the server computer. Once turned on and logged in as root, type the “nano / etc / network / interfaces” command to enter the Debian IP address configuration. For more details, see the picture below.

Then after typing this command, please press “enter” to enter Debian IP address configuration. For Debian IP address, can be set according to the wishes and needs of my friend. But for the IP network, netmask, and broadcast we must follow the rules of Subnetting (do not miss it!), I’m sure you all know how to use subnetting rules. For example as below.

To configure the IP Address address, enter the configuration as given white box in the above picture sob. If so, then press “Ctrl + X” simultaneously then press “y” then “enter” to save the configuration you made earlier.

In the next step, type the “service networking restart” command to restart the system and to have the configuration pre-installed. After restarting the network interface it will show a notice like the picture below which means the restart process is successful and the IP has changed.

Then if the notification appears like the picture before, then we will continue to the process of checking IP address. First, we check it from his Debian Server computer. The way we just type the command “ifconfig” like this.

If the IP address is correct, we proceed to the IP addressing process on the Client computer (I’m using Windows 7). For how to configure it, see picture below.

If already entered in window like picture above, click “Properties”.

After clicking “Properties” window will appear like this. Since the IP used is IP v4, then we click “Internet Protocol Version 4 (TCP / IPv4)”. Then, the IP configuration must be aligned and in line with the IP on the Server so that they can be connected to each other.

When you’re done configuring your Client’s IP computer, click “Ok” and then close the IP configuration window. Then we will continue to check the connection between the server with the client. The trick, open “Command Prompt” in Windows (Client) and then type “ping”. The IP written is the IP of the Server ( If successful it will be like the one marked with a yellow box. IP Address is the IP that I created on my server, so my friend can create a different IP and to check using ping adjusted only.

If it fails, then the result will be like this omdimas.

Well, if the result is like the first Command Prompt image, then the configuration IP address that has been buddy for successful and running well. Hopefully what I explained above, my friend can all understand and immediately practice. Thank you and good luck.

5 Collection Items Women Have High Selling Value

Shopping is a hobby of most women. Without realizing it, the purchased goods collect in large quantities. Apparently, certain items that are often purchased this can be a profitable investment in the future. Anything? The following reviews as quoted from hargapromosupermarket.com :1. Jewelry

Women are known as a creature who likes to preen. Therefore, it is not strange promo alfamart if little by little jewelry collected into a collection.

Consciously or unconsciously, by bit by bit buying jewelry, both from precious metal and precious stone, the women concerned are investing promising for the future.

In Dailymail.co.uk reported by an average woman in a regularly investing jewelry will have a treasure trove in the future. On the site mentioned that the average jewelry will be worth up to £ 6,000 or approximately Rp 102 million and this number will continue to increase over time.

A very fantastic number promo alfamidi is not it ?! This is because the value of each collection increases by about £ 2,000 (Rp 34 million) in ten years.

2. Branded Shoes

For the fashion enthusiast , of course shoes to be goods that must matching with the clothes worn. Not infrequently the fashionista has a lot of pair of shoes with various models that eventually rarely used.

Branded shoes can hold value that can increase in the future. Shoe collectors will be willing to buy vintage footwear at a high price promo carrefour. Usually the sale of shoes like this is done on auction sites like eBay on the eventcertain.

3. Branded Beautiful Bags

Similar to shoes, bags are also items that can be mixed and match for women who like to appear hits with the latest fashion. However, not all branded bags can be a promising investment.

Some of them dropped in value very quickly, Valextra, Tod’s, Versace, Etro, Marni, Alexander Wang, 3.1 Philip Lim, and Marc Jacob.

Bags from Channel brand, Louis Vuitton, Hermes, Christian Louboutin, Cartier, David Yurman, Alaia, Van Cleef & Arpels, and Goyard have steadily stable values. The best investments for women’s bags are Givency, Victoria Beckham, Charlotte Olympia and Alexander McQueen for having a high sale price promo giant.

4. Books

There are many women who love to read books to fill their leisure time. Mareka also includes people who still often buy books in physical form even though now many editions of eBooks .

Apparently, the book can also be a profitable investment, especially the original printed books of the first edition of a classic story especially if the condition is well preserved. For example, the novel by John Kennedy Toole first published in 1980 is now worth up to $ 4,000 (Rp 52 million). The investment value of a used classic book will be much higher if it is affixed by the authors’ signature.

Poster Film

5. Movie Posters

For film fans, not infrequently who collect posters of movies that they like to just be a display in their bedroom. However, who would have thought a sheet of a film poster that is not expensive can be a lucrative investment in the future.

Old school films, in particular, can have tremendous price increases potential. This is because posters of vintage films were made in the days before the boom of digital media so that the number of such posters is very rare.

To reload a photo promo indomaret from a vintage moviewill cost so much that the poster is almost impossible to produce again. This is the attraction for rare goods collectors who will raise the value of vintage film posters . For example, the “Pulp Fiction” movie poster, worth less than US $ 100, is now worth US $ 1,000.

Steps to Install Laravel on Linux Mint 18.3

Laravel is a very popular free, open source PHP framework created by Taylor Otwell and is intended to make it easy to build web applications by following a model-view-controller (MVC) architecture.

In this paper, I want to share a guide how to install Laravel steps in Linux Mint. Hopefully this article is easy to understand especially for readers who want to learn PHP web programming using Laravel Framework.

1. System Update

Before starting, we make sure first if our Linux has been updated

to check and update the system we can use apt update command,

$ sudo apt update

2. Install Package Dependencies and Composer

The next step I used to do to install laravel to web server-I use
lampp-, is to install the Composer app. The name of this latter app (Composer), I will later make a bridge to download Laravel to the web server -If you have not installed xampp on Linux, follow the tutorial how to install xampp here -.

To download Composer we need curl, and we also need php7.0-cli to install and run Composer. In addition to these two packages we also need Git which will be used by Composer to download dependencies. The three packages I mentioned above can be installed simultaneously by typing this command in the terminal:

$ sudo apt-get install curl php7.0-cli git

then install the php dependencies that will be needed to run Laravel

$ sudo apt install php-mcrypt php-gd php-mbstring php-xml

Since we have installed the curl, we will now call it to install the composer.

$ curl -sS https://getcomposer.org/installer | sudo php – -install-dir = / usr / local / bin -filename = composer

The above command to download and install Composer in / usr / local / bin.

The output will look like this:

To test whether the Composer install has been successful, please type the command running Composer

$ composer

If you get a more or less similar look like this, it means that Composer has been successfully installed on your system.


3. Install Laravel Through Composer

After Composer successfully installed, the next step is to install Laravel through the Composer that we have installed. The trick is very easy, first move to the htdocts folder (if using Xampp), then type the command to create a new folder in which Laravel will be loaded, by typing the create-project composer in the terminal:

$ sudo composer create-project laravel / laravel try

* This may take a long time

4. Run Artisan Serve

If the Laravel install is complete, now go to the “try” folder we created earlier, and run the command

$ php artisan serve

Type the server address in the browser to open the “try” Larvel page.


Added EPEL repositories in CentOS

Installing programs in a Linux distro such as CentOS or RHEL (Red Hat Enterprise Linux) is just typing the yum install command followed by the package name. But not all programs are in the default repository.

Well … for that sometimes we need to add another repository that offers more free and open source software. The most common is the Fedora-managed EPEL (Extra Packages for Enterprise Linux) repository and can be utilized by a single Linux distro (RHEL, CentOS, Oracle Linux, Scientific Linux), so CentOS is not limited.

The easiest and most recommended way to first try is to install it via yum, and the command is:

yum install epel-release

But this requires the CentOS Extras repository on your server, eg nothing or you failed then we can add it manually depending on the version and architecture of the CentOS you are using.

CentOS 4.x 32-Bit

wget http://download.fedoraproject.org/pub/epel/4/i386/epel-release-4-10.noarch.rpm
rpm -ivh epel-release-4-10.noarch.rpm

CentOS 4.x 64-Bit

wget http://download.fedoraproject.org/pub/epel/4/x86_64/epel-release-4-10.noarch.rpm
rpm -ivh epel-release-4-10.noarch.rpm

CentOS 5.x 32-bit

wget http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
rpm -Uvh epel-release-5 * .rpm

CentOS 5.x 64-bit

wget http://download.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm
rpm -ivh epel-release-5-4.noarch.rpm

CentOS 6.x 32-Bit

wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm

CentOS 6.x 64-bit

wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm

CentOS 7.x (only 64-bit edition)

wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
rpm -ivh epel-release-7-5.noarch.rpm

Do not forget to execute the above repository EPEL installation command requires root privileges.

Troubleshooting cURL error “Problem with the SSL CA cert (path? Access rights?)”

This morning when I checked the PHP script for automatic backup of WordPress to DropBox and I got the error message “Problem with the SSL CA cert (path? Access rights?)”, This problem has been going on for almost a month. 🙁 Luckily it gets caught now rather than late and does not have any backups.

So there are 3 related factors, namely cURL is used by PHP and interact with resource via TLS / SSL protocol. After finding out here and there I get one solution that can be applied immediately.

Before trying the way below please try to reboot your VPS first, just type reboot command and ENTER key followed in your shell. If it still fails also resolve this error then please try the solution below.

Please login to your VPS and download the SSL certificate bundle with cURL:

curl http://curl.haxx.se/ca/cacert.pem -o/etc/pki/tls/certs/cacert.pem

Then open the php.ini file (I use the nano text editor), then find curl.cainfo (look for it with CTRL + W in nano). If it is filled with the location of the file you just downloaded.

curl.cainfo = “/etc/pki/tls/certs/cacert.pem”

After that restart the PHP or PHP-FPM service that is running to use the new configuration. If in CentOS can with command:

service php-fpm restart

Please check again your troubled script, should be able to run again normally.

I hope this helps.


November 6, 2017

Linux is a free operating system that is a derivative of Unix, many developers and the Linux community in the world. Linux is known to be difficult to use than Windows OS, For friends who are learning to use Linux basic commands on Linux terminals, we must know because we will use them to operate the Linux system.

Collection of Linux Commands in Terminal CompleteHere’s a complete set of Linux basics commands in the terminal:

adduser = Add user to the system
addgroup = Add group to the system
alias = Create an alias
apropos = Search Help man page (man-k)
apt-get = Find and install the software package (Debian)
aspell = SpellChecker
awk = Search and Replace text, database sort / validate / index

basename = Strip directory and suffix of filename
bash = GNU Bourne-Again Shell
bc = Arbitrary precision calculator language
bg = Send to background
break = Exit a loop
builtin = Run shell builtin
bzip2 = Compress or decompression file named (s)

cal = Show calendar
case = conditional commands
cat = Displays the contents of the file
cd = Changing the Directories
cfdisk = The manipulator partition table for Linux
chgrp = Change group ownership
chmod = Change access permissions
chown = Changes the file and group owners
chroot = Run the command with a different root directory
chkconfig = System service (run level)
cksum = Print byte CRC checksum and calculate
clear = Delete terminal screen
cmp = Compare two files
comm = Compare two files sorted by line by line
command = Run command – shell ignore function
continue = Resume next iteration of a loop
cp = Copy one or more files to another location
cron = Daemon executes the scheduled command
crontab = Schedule a command to run at a later time
csplit = Split files into context – specified pieces
cut = split the file into sections

date = Display or change date & time
dc = Desk Calculator
dd = Convert and copy files, write disk headers, boot record
ddrescue = Tool to repair data
declare = Declare variables and give them attributes
df = Show disk space
diff = Show differences between two files
diff3 = Show differences between the three files
dig = DNS lookup
dir = List of short directory contents
dircolors = Color setup for ls’
dirname = Convert all pathname to multiple paths
dirs = Show list of remembered directories
dmesg = Print kernel & driver messages
du = Estimated use of file capacity

echo = Display a message on the screen
egrep = Search the file for the line corresponding to the extended expression
eject = Remove removable media
enable = Enables and disables the builtin shell command
env = Environment variable
ethtool = Ethernet card settings
eval = Evaluate some commands / arguments
exec = Run command
exit = Exit the shell
expect = automate applications that are freely accessible on the terminal
expand = Convert tab to a space
export = Set environment variable
expr = Evaluate expression

false = Did not do anything, did not work
fdformat = Low-level format of a floppy disk
fdisk = partition table manipulator for Linux
fg = Send job to foreground
fgrep = Find files for rows that match fixed strings
file = Specify file type
find = Search for files that meet the desired criteria
fmt = Re-type the text type
fold = Wrap text to fit a certain width.
for = Expand the words, and run the command
format = Format disk or cassette
free = Show memory usage
fsck = Checking and fixing the File consistency system
ftp = File Transfer Protocol
function = Define the macro function
fuser = Identify/disconnect the process that is accessing the file

gawk = Find and Replace text in the file
getopts = Outline parameters according to position
grep = Find files for rows that match a certain pattern
group = Print the name of the group to the user
gzip = Compress or decompress the file name

hash = Remembers the entire pathname of an argument name
head = Output of the first part of the file
help = Show help for built-in commands
history = Command history
hostname = Print or set the system name

id = Print user and id group
if = perform conditional commands
ifconfig = Configure the network interface
ifdown = Stop the network interface
ifup = Starts the network interface upwards
import = Capture the X server screen and save an image to a file
install = Copy files and set attributes

join = join the line in the common field

kill = Stops running processes
killall = Terminate the process by name

less = Display the output of one screen at a time
let = Perform arithmetic on the shell variable
ln = Create a relationship between files
local = Create variable
locate = Search file
logname = Print login name
logout = Sign out of a login shell
look = A line display that starts with a particular string
lpc = Printer path control program
lpr = Offline print
lprint = Print file / Print file
lprintd = Abort print job
lprintq = List of print queues
lprm = Remove the job from the print queue
ls = List information about the file
lsof = List opens the file

make = A group of Recompilation of the program
man = Manual help
mkdir = Create a new folder
mkfifo = Create FIFOs (named pipes)
mkisofs = Create hybrid ISO9660 / JOLIET / HFS filesystem
mknod = Create a special file block or character
more = Display one screen output at a time
mount = Mount file system
mtools = Manipulating MS-DOS files
mv = Move or rename a file or directory
mmv = Move mass and rename (file)

netstat = Network Information
nice = Set the priority of a command or a job
nl = Line number and write file
nohup = Execute command immune to hangups
nslookup = Query Internet calls the server interactively
notify-send = Send desktop notifications

open = open the file in the default app
op = Access operator

passwd Modify the user password
paste = Merge file lines
pathchk = Check the portability file name
ping = Test network connection
pkill = stop running process
popd = Returns the previous value of the current directory
pr = Prepare files to print / print
printcap = Database printing capability
printenv = Print environment variable
printf = Format and print data
ps = Process Status
pushd = Save and then change the current directory
pwd = Knowing the directory we are in

quota = Displays disk usage and limits it
quotacheck = Examines the file system for disk usage
quotactl = Set disk quota

ram = ram disk device
rcp = Copy files between two machines
read = Reads the line from the standard input
readarray = Read from stdin to array variable
readonly = Marking a variable / function as readonly
reboot = Reboot the system
rename = Rename the file
renice = Change the priority of the running process
remsync = Remote sync files via email
return = Exit shell function
rev = Reverse the line from a file
rm = Delete the file
rmdir = Remove folder
rsync = Remote file copy (Synchronize file tree)

screen = Multiplex terminal, run remote shells via ssh
scp = Secure copy (remote file copy)
sdiff = Merge two files interactively
sed = Stream Editor
select = Receive keyboard input
seq = Print numerical sequence
set = Manipulate shell and function variables
sftp = Secure File Transfer Program
shift = Shift of position parameters
shopt = Shell option
shutdown = Shutdown or restart linux
sleep = Delay/delay for a certain period
slocate = Search file
sort = Sort text file
source = Run command from the file. ”
Split Split file into fixed-cut
ssh = Secure Shell client (remote login program)
strace = Trace system calls and signals
su = Replace user identity
sudo = Run the command as another user
sum = Prints the checksum for the file
symlink = Create a new name for the file
sync = Sync data on disk with memory

tail = Output of the last part of the file
tar = Tape Archiver
tee = Redirect output to multiple files
test = Evaluation of conditional expressions
time = Program Measures running time
times = User and system time
touch = Change timestamps file
top = List of processes running on the system
traceroute = Trace Route to Host
trap = Run command when a signal is set (Bourne)
tr = Translate, squeeze, and / or delete characters
true = Do nothing, succeed
tsort = Topology sort
tty = Print filename from the terminal on stdin
type = explain the command

ulimit = Limit user resources (resources)
umask = The user creates hidden files
umount = Unmount (not up) device
unalias = Remove alias
uname = Print system information
unexpand = Convert spaces for tabs
Uniq = Uniquify file
unit = Convert units from one scale to another
unset = Remove variable or function name
unshar = Unpack the record of the shell archive
until = Execute command (until error)
useradd = Create a new user account
usermod = Modify user account
users = List of currently logged in users
uuencode = Encode binary files
uudecode = Decode file created by uuencode

v = List of contents of the directory Verbosely (ls-l-b ‘)

vdir = List of contents of the directory Verbosely (ls-l-b ‘)
vi = Text Editor
vim = Text Editor
vmstat = Report of virtual memory statistics

Wwatch = Execute / show a program periodicallywc = Print bytes, words, and count rowswhereis = Search user $ path, man page and source file for the programwhich = Find user $ path for program filewhile = Run commandwho = Print all the usernames that are logged inwhoami = Print current user and id name (`id-un ‘)wget = Fetch web pages or files via HTTP, HTTPS or FTPwrite = Send a message to another user

xargs = Run the utility, passing through the list of built arguments
xdg-open = Open the file or URL in the app that the user likes.

yes = Print the string until the interrupt
. = Script runs the current shell command
zip = Package zip and compress (archive) files
!! = Run the last command again
### = Comment / Remark
./ = The command runs the program

In terminal when creating or editing the file:
In vi editor or another editor there are two modes, COMMAND mode for command and INSERT mode for typing.
Press ESC key to move to COMMAND mode
Press the INSERT button to switch to INSERT mode
Save, move to COMMAND mode and type: w
Save and Exit: wq
Exit: q or: q!

How to get into hard drive/hard disk/partition
we must first see the partition by typing

# fdisk -l or # ls / dev

Usually, before we can get in the partition is required to mount the partition.

After the list of the / dev directory is displayed see the partition we want to mount. Suppose we decided to mount the dev partition sda1. Flash using sdc name, sdc1 etc.

Then type:

# mount / dev / sda1 / mnt

Explanation: mount is the command being/dev/sda1 is the location of the device to be mounted. And / mnt is the destination directory of the mount.

6. Now the contents of the sda1 directory we can see in the mount / mnt directory. Type:

# ls / mnt

it will show list from sda1

7. To remove the drive. Type:

# umount / dev / sda1

Usually for desktop partition linux contained in / media (but must be mounted first)

# cd / media

to view all partitions.

# ls

To delete files and folders in the trash

# rm -rf ~ / .local / share / Trash / files

#rm -rf ~ / .local / share / Trash / files / *

To view the contents of the trash
# ls ~ / .local / share / Trash

I hope this helps

40 Basic Commands On Complete Linux System Operation With Syntax and Functions

Learn Commands Basic Commands On Complete Linux System Operation With Syntax and Functions

Linux is a free open source operating system software to be distributed under the GNU license. Linux operating systems are known as Linux distributions or Linux distributions include support software such as web servers, programming languages, databases, desktop displays such as GNOME, KDE and Xfce also have office suite suites (office suite) such as Open Office.org, KOffice, Abiword.

Once we know the history and understanding Linux, this time we will learn the basic commands of Linux. Because to execute on many Linux applications using basic commands. Here are some basic commands found on Linux.
Basic Linux Commands

  1. sudo su
    Serves to login as root / highest user
    syntax: sudo su
  2. root
    Serves to login as root
    syntax: root
  3. login
    Serves to login as another user, but must be root first to run this command bias.
    Syntax: login nama_user
  4. cd (change directory)
    Serves to switch directories / folders
    syntax: cd address_directory
    example: cd / etc / network
  5. pwd
    Serves to show which directory our position is
    syntax: pwd
  6. ls (list)
    Serves to view the contents of a directory
    syntax: ls
  7. mv (move)
    Serves to move, cut or rename files
    syntax: mv / directory / nama_file_asal / nama_file_baru
    example: mv /etc/file1.txt file2.txt >>> rename file
    mv /etc/file1.txt / var / www >>> cut file
  8. mkdir (make directory)
    Works to create a new folder
    syntax: mkdir nama_folder
    example: mkdir folder1
  9. rmdir (remove directory)
    Function to delete folder
    syntax: rmdir nama_folder
    example: rmdir folder1
  10. touch
    Works to create new files
    syntax: touch filename
  11. rm (remove)
    Serves to delete files
    syntax: rm file1.txt
  12. more
    Serves to display the contents of a file
    syntax: more file_name
  13. echo
    Serves to write a word or phrase to a file
    syntax: echo “message content” file_name
  14. aduser
    Serves to add new users
    syntax: adduser nama_user
    Serves to remove the user from the system
    syntax: deluser nama_user
  15. addgroup
    Function to add new group
    syntax: addgroup nama_group
  16. lsusb
    Serves to see the USB device that is connected computer
    syntax: lsusb
  17. lpci
    Serves to view connected PCI devices
    syntax: lpci
  18. lshw
    Serves to view computer hardware
    syntax: lshw
  19. dmesg
    Serves to see the hardware that is being activity
    syntax: dmesg
  20. top
    Serves to see running processes like task manager in windows
    syntax: top
  21. cpuinfo
    Serves to view computer specifications
    syntax: cpuinfo
  22. meminfo
    Serves to view RAM status
    syntax: more / proc / meminfo
  23. clear
    Serves to clean the screen
    syntax: clear
  24. halt
    Serves to turn off computer (must as root)
    syntax: halt
  25. reboot
    used to restart the computer (must as root)
    syntax: reboot
  26. exit
    Serves to exit the terminal
    syntax: exit
  27. wget
    Serves to download via terminal
    syntax: wget link_download
  28. ifconfig
    Serves to view Ethernet/network card configuration
    syntax: ifconfig
  29. apt-get
    Serves to obtain the package/software from ubuntu repository online
    syntax: apt-get nama_paket
    example: apt-get install dhcp3-server
  30. tar
    Serves to extract files
    syntax: tar [parameter] file_name
  31. nautulis
    Works to open the GUI view directly
    syntax: nautulis
    example: sudo nautulis >>> using GUI mode with root)
  32. df -h
    Serves to see the remaining hard drive capacity
    syntax: df -h
  33. who
    Serves to see our login name
    syntax: who
  34. cat
    Serves to open the file
    syntax: cat file_name
  35. date
    Serves to view dates
    syntax: date
  36. cal
    Serves to view the calendar
    syntax: cal
  37. hostname
    Serves to display computer name
    syntax: hostname
  38. free
    Works for free memory
    syntax: free
  39. history
    Serves to see what commands ever typed
    syntax: history
  40. chomod +X
    Serves to extract files into parts of the system

Thus the information provided may be useful. I hope you like it!