deletions | additions       diff --git a/General Notes on Bioinformatics.md b/General Notes on Bioinformatics.md  index e5372a6..2698368 100644  --- a/General Notes on Bioinformatics.md  +++ b/General Notes on Bioinformatics.md 
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And this interactive tutorial: [http://www.ee.surrey.ac.uk/Teaching/Unix/](http://www.ee.surrey.ac.uk/Teaching/Unix/)  ##Summary of Unix/Linux  commands and terms $ **ls** lists files and directories (folders). If left as just "ls" this command will list the files and directories in your current location. If a "path" is added afterwards (e.g., ls /usr) this command will list the files and directories in that location.  $ **cd** use to change directories