Delicious Bookmarks for September 29th through September 30th

These are my links for September 29th through September 30th:

• Order of operations – Wikipedia, the free encyclopedia – September 30th
  ( tags: mathematics math wikipedia arithmetic wiki logic order educational operators )
• Bash by example, Part 3 – September 29th
  ( tags: bash linux scripting unix shell howto programming tutorial )
• BASH - GNU Project – Free Software Foundation – September 29th
  ( tags: bash shell linux unix scripting gnu opensource )
• Bash Reference Manual – September 29th
  ( tags: bash linux reference programming unix documentation manual shell )
• Bash by example, Part 1 – September 29th
  ( tags: bash linux tutorial shell scripting programming unix howto )