Ctrl + Z – Ubuntu Tricks

Whenever you’re using a system, there are always one or more keyboard shortcuts. Essentially, these are functions and the keyboard button pressing sequence is the trigger. There are some of the pretty common key shortcuts like “Ctrl + C” to copy file(s) and/or content(s), “Ctrl + X” to cut and “Ctrl + V” to paste them. These keyboard shortcuts are so popular that every major system supports them and performs the same action.

How about “Ctrl + Z”? Like I said earlier, depending on the apps you’re using, this specific keyboard shortcut may mean different things. Today, let’s take a look on the functions of “Ctrl + Z” on Ubuntu.

The basic usage

It’s very common that we use “Ctrl + Z” for undoing any mistake we perform. For example, I want to type “I love Linux!” on the text editor.

Ouch! I mistyped “Linux”, right? What would you do in this scenario? Keep pressing backspace until the wrong word is removed? Wrong! Just press “Ctrl + Z”.

The function undo the last session of typing/actions you performed. In my case, the last thing I typed was “LInx” and so, it deleted the word from the text editor. Now, type what you truly feel –

It’s fine now! Well, that’s not where the basic usage of the keyboard shortcut ends.

Here is the screenshot of my test directory.

You can see that there are 3 files. If I delete any of them accidentally,

I can get it back by pressing “Ctrl + Z”.

Note that depending on your system, it may and may NOT work. That’s why before you completely DEPEND on this awesome trick, make sure that your system supports it in the scenarios you’re about to work on. Otherwise, disasters are bound to happen.

Ctrl + Z in the terminal

For every single Linux computer, the “Ctrl + Z” is the meaning of a complete different thing when you’re working on a terminal window. Let’s clear things with a demo.

Run the following command –

sudo pip install termdown

termdown 60

A process will start running while counting from 60 seconds to 0. Press “Ctrl + Z”.

Did the process die? Let’s find out. Run this command –


The process is still alive! What the heck did just happen?

Here’s what “Ctrl + Z” does. It sends SIGSTP signal to the current foreground application. This effectively puts the program in the background. In English, it basically PAUSES the application. When you ran the “fg” command, it took the app from its frozen state into a living thing.

However, if you wanted to kill the program, you should have pressed “Ctrl + C”. It effectively KILLS the running process.

Got a grab on “Ctrl + Z”? Enjoy!

Sandclock IDC thành lập vào năm 2012, là công ty chuyên nghiệp tại Việt Nam trong lĩnh vực cung cấp dịch vụ Hosting, VPS, máy chủ vật lý, dịch vụ Firewall Anti DDoS, SSL… Với 10 năm xây dựng và phát triển, ứng dụng nhiều công nghệ hiện đại, Sandclock IDC đã giúp hàng ngàn khách hàng tin tưởng lựa chọn, mang lại sự ổn định tuyệt đối cho website của khách hàng để thúc đẩy việc kinh doanh đạt được hiệu quả và thành công.
Bài viết liên quan

Ubuntu LTS Releases: Everything You Need to Know

Millions of people around the world use Ubuntu as their Linux distribution of choice, and most have wondered at one point...

Best Ubuntu Derivatives in 2018

The open source ideology is so powerful because it allows developers to build on existing projects and expand them to accomplish...

IntelliJ IDEA 2016.3.4 Community Edition out, Install on Ubuntu, CentOS

IntelliJ IDEA 2016.3.4 Community Edition recently released, is the most Intelligent IDE for the Java Platform as well as...
Bài Viết

Bài Viết Mới Cập Nhật

Hướng dẫn chuyển đổi windows server windows evaluation to standard và active windows server 2008 + 2012 + 2016 + 2019

How to Update Ubuntu Linux

Squid Proxy Manager cài đặt và quản lý Proxy Squid tự động trên ubuntu

Hướng dẫn cài đặt Apache CloudStack

Hướng dẫn ký file PDF bằng chữ ký số (chữ ký điện tử) và sửa lỗi mới nhất 2021 foxit reader