1. Reverting back git history from a commit:

git revert --no-commit 0766c053..HEAD
git commit

source: stackoverflow

2. getting the IP Address quickly in most linux systems including termux:

ip a | grep inet

3. Downloading protected PDFs from google drive and having them be searchable:

• https://bytesbin.com/download-view-only-pdf-google-drive/
• https://askubuntu.com/a/474324

4. Finding the public IP of a computer or server

curl ipinfo.io/ip

(Optional) Create a bash alias like the following to make it even easier

alias whatismypublicip='curl ipinfo.io/ip'

5. Removing sensitive data after having it be committed to github Use git filter branch

6. Getting saved wifi passwords from a linux machine

cd /etc/NetworkManager/system-connections/
ls
# find the correct connection-name / wifi SSID
cat <connection-name> | grep psk