Useful command lines in Ubuntu that help using terminals

My favorite terminal application

Terminator allows you to open multiple terminals in one window, which can boost your productivity by operating two or more shells side by side or in grids.

It can be installed to Ubuntu by running the following code:

sudo apt-get install terminator

Shortcut keys:

Useful commands

Show running processes in Linux

• top
• ps -A

For more infomation, please find from:

• Show All Running Processes in Linux using ps/htop commands - nixCraft
• How to Manage Processes from the Linux Terminal: 10 Commands You Need to Know - How-To Geek

Get root permission for GUI file manager

• sudo nautilus

Find previous commands

• history
  Display a list of previous commands

• !n
  where n is the index of a command displayed by history, e.g. !4

• Ctrl + R
  Find the historical commands. Suggest a previous command that starts with the chars as you type

Execute a shell script

In Ubuntu, a shell script is a .sh file that contains a series of commands in a Unix shell, similar to a batch (.bat) file in Windows. In a .sh file, it is often typed with #! /bin/bash in the first line to indicate that is a bash script. For example,

#! /bin/bash

echo "System"
uname -o
echo "Memory Usage"
free -m
echo "Local Library Path"
echo $LD_LIBRARY_PATH

Save as test.sh, and then need the file executable, by running the following command in the terminal:

chmod +x test.sh

chmod is a command to change file permission, +x is the argument to set execute permission to the file.

After that, you can ./ in front of the filename to execute the shell file in the terminal, i.e.

./test.sh

Read More:

• Linux Commands - Complete Guide - LinOxide
• Beginners/BashScripting - Community Help Wiki - Official Ubuntu Documentation
• How to Find Files on Linux With 3 Easy Commands - MakeUseOf
• 5 commands to check memory usage on Linux - BinaryTides
• 10 Useful du (Disk Usage) Commands to Find Disk Usage of Files and Directories - TecMint

See Also:

• Install Chrome Remote Desktop on KDE desktop / Kubuntu 14.04 LTS or higher