jbr questions

jbr answers

• How do I add a cumulative sum to an array for only one value?
• Match the last element in a delimited list?
• Confusion in evaluating == and &
• Easier way to search through large files in Ruby?
• per-user resolv.conf
• What does callback && callback() mean in javascript [duplicate]
• create list of all files in every subdirectories in bash
• Share variable through ruby processes
• Prettier tab symbols in vim
• Writing program to run on server, requesting experienced advice