Back to school

Since I've been back at college, I've been using some things that I don't use otherwise... it's quite a different world here than in Silicon Valley.

• Spellcheck
  
• aspell -c <file> spellcheck a file
• aspell -a interactive spellchecker
• PDF-related
  
• evince &lt;file> to launch a GUI PDF viewer
• pdftohtml &lt;file> to create three files, one which contains a table of contents, another which contains the text, and a third which combines both with frames
• gs ghostscript
  
• apropos pdf list things that your system can do with PDF files... there's a lot of them!
  
• How to open a new tab in a GNOME terminal (How is this back to school? Well, I'm trying to eliminate all mouse usage now that I'm using this laptop everywhere...)
  
• Ctrl+Shift+T Open tab
  
• Ctrl+Shift+W Close tab
• Ctrl+PageUp/Down select Previous/Next tab
  
• Ctrl+Shift+PageUp/Down move terminal tab to the left/right
• Alt+&lt;number> select specific terminal tab by number
  

Some things I'd like to learn (anyone out there know?):

• How to insert unicode characters in vi
• Invoke a spellchecker from within vi