vi 편집기
In vi do:1,$d to delete all lines.The : introduces a command (and moves the cursor to the bottom). The 1,$ is an indication of which lines the following command (d) should work on. In this case the range from line one to the last line (indicated by $, so you don't need to know the number of lines in the document). The final d stands for delete the indicated lines.There is a shorter form (:%d) bu..