For the love of Kernighan & Ritchie, please do not promote this as "a convenience library aimed towards non-expert users." The only way beginners are going to learn is experimenting with the command line, not having their hands held with a tiny subset of what's available.

And the positioning -- what's agile about knowing your public ip or uploading images to imgur? Is this a belated April Fool's day joke I'm not getting?

Ok, now that I'm done venting, here's the *nix equivalents for all but the pair command (will edit in. EDIT: added. also did s/python2/python):

    # base64 is already a command, supports -d

    function imgur_up() {
      curl -F key=yourkeyhere -F "image=@$1" http://api.imgur.com/2/upload
    }   
        
    function public_ip() {
      curl -sL myip.dk | egrep '[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}'
    }   

    function sloc() {
      sed '/^$/d' $1 | wc -l
    }

    # no args clears users
    # with args, assigns usernames
    function gpair() {
      if [ -z "$1" ]; then
        echo "Resetting to default user"
        git config --unset-all user.name
      else
        git config user.name "$(echo $@)"
      fi
      echo "User is now: $(git config user.name)"
    }

    function tab_to_space() {
      sed 's/\t/  /g' $1
    }   

    function space_to_tab() {
      sed 's/  /\t/g' $1
    }   

    function url_decode() {
      echo "$1" | python -c 'import sys,urllib;print urllib.unquote(sys.stdin.read().strip())' 
    }   

    function url_encode() {
      echo "$1" | python -c 'import sys,urllib;print urllib.quote(sys.stdin.read().strip())'
    }   

    function web_serve() {
      python -m SimpleHTTPServer
    }