How to check the installation date of your linux operating system?

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⏳ Last active: 15 Apr 2025 at 16:01

📅 Created: 12 Feb 2021 at 09:36

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Have you ever wondered when did you installed your operating system? Was a year ago or maybe two, three who knows right? Well, linux is a smart system and knows everything for itself! You can open the terminal, write a simple command and the answer is going to be in front of you. So lets do it open the terminal and type:

sudo dumpe2fs /dev/sda1 | grep 'Filesystem created:'

You are going to see something like:

root@ro22proxy3:~# sudo dumpe2fs /dev/sda1 | grep 'Filesystem created:'

dumpe2fs 1.42.13 (17-May-2015)

Filesystem created: Tue May 9 13:24:21 2017

So our operating system was installed in May 2017 and we even have the date and exact time... May 9 13:24:21. So thats it in one single command we found the full information about are operating system installation date.