How To Create A Strong Password Without Having To Remember It
You can use a hash function, avialable in any operation system, for example sha256sum with a photo or an mp3 file, any file you can easily remember. For example, from…
How To Delete or Not Keep a Command in Bash History
Delete a Command from Bash History Here I give some test commands to fill history: pontikis@ubuntu:~$ clear pontikis@ubuntu:~$ echo 1 1 pontikis@ubuntu:~$ echo 2 2 pontikis@ubuntu:~$ echo 3 3 pontikis@ubuntu:~$…
How to Display Grub Menu at Boot Time in Ubuntu
In Ubuntu, Grub boot menu is hidden by default. You can display it by pressing "SHIFT" continuously at boot time. This is useful (among other cases) in case you want…
When to Restart Services or Reboot after Update on Debian or Ubuntu
After update Debian (or Ubuntu) using apt-get update && apt-get -V upgrade you need to know which services need restart and if system reboot is required (kernel upgrade). A common…
How to Start Youtube Playlist from Random Video
If you want to start a Youtube playlist from random video, just add: &index=random_number to the src attribute of the embed code. The code To produce a random number, I…
- 1
- 2
- 3
- 4
- …
- 7
- Go to the next page