deletions | additions       diff --git a/General Notes on Bioinformatics.md b/General Notes on Bioinformatics.md  index b08b97f..4041cfb 100644  --- a/General Notes on Bioinformatics.md  +++ b/General Notes on Bioinformatics.md 
...
Summary of commands and terms  $ ls lists files and directories (folders) in directory you are currently in  $ cd use to change directories  $ cd .. use to move up one directory  $ cd directory_name use to move to that directory  $ cd ~ use to move to the home directory   $ grep file_name  $ grep –c “what you want to count” file_name counts the number of times a file   contains a specific character or sequence of characters  $ less file_name view a file  command line – the command line is where you type commands in a terminal window