sed で1行を100行に増やす
$ echo hello | sed -n -e 'h;G;H;G;h;G; h;G;H;G;h;G; p'
hello
hello
hello
hello
....
2013-02-22
$ echo hello | sed -n -e 'h;G;H;G;h;G; h;G;H;G;h;G; p'
hello
hello
hello
hello
....