BASH | General commands

When running bash scripts, you can include other commands on the same line by using these at the end of each "line" command. bash: 
 A; B    # Run A and then B, regardless of success of A
A && B  # Run B if and only if A succeeded
A || B  # Run B if and only if A failed
A &     # Run A in background. 
 Example: apt install vim -y A && B apt update vim -y 
 Running a bash script file .sh: 
 sh scriptfilename.sh 
 If you get a "Permission denied" error,  either run  "sudo" or you may need to make the script executable by running  
 chmod +x scriptname.sh