如何使用paste（1）排列列？或者如何使对齐表合并shell中的行？

I want to merge lines such that the merged lines are aligned on the same boundary. UNIX paste(1) does this nicely when lines all meet at the same tab boundary, but when lines differ in size (in the file that lines are being merged into), the text comes out awkward.I want to merge lines such that the merged line