My personal collection of useful shell scripts

• newdwin: a very simple one line script to create a new Terminal window with my "DeskNames" settings using term.sh. Here's the result:
  

  With many projects going at the same time, and many desktops open, it is difficult to know which desktop is which. I put this window in the corner of every desktop to keep track of my desktops. The large font allows me to read the desktop names in Mission Control mode.

• newdwin2: same as newdwin, except the output is printed to the right-hand screen in a two display setup.

• newiwin: one liner that creates my default windows for launching IPython Notebooks. With typically dozens of Terminal windows open, I find a little bit of custom color coding for each window type speeds up finding the window I'm looking for, increasing productivity.

• newiwin2: same as newiwin, except the output is printed to the right-hand screen in a two display setup.

• term.sh: A script for opening a new Mac OS X terminal window with the desired command, window settings, size, and position. It is based on David Moles' response to this stackoverflow question, but tweaked to optionally set the size and position. The syntax is

  term.sh "command" "window settings" width height y-position x-position

  For example

  term.sh "echo 'hello world'" "Novel" 640 320 500 50

• keepNthRow: a routine to keep the nth row of an input file, and write it to file if requested. Includes options for keeping the header and verbosity. An example that will include verbosity, keep the top row (column names) in addition to every tenth row of input.txt, and write the contents to output.txt is shown below:

  keepNthRow -vkn 10 -f output.txt input.txt