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why does grep in a script run in Cygwin not maintain columnar output from a text file when it's (grep's) output is redirected to another text file - say a list of x, y coordinates marked by x and y which it can separate to 2 files (one of x coords and the other of y coords with the xs and ys being removable by sed). Instead it outputs, what started as a column of numbers, as rows of space separated numbers? I tried the Cygwin website but there's too much garbage to go through.