l57.1a

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 1A 代码 · 共 46 行

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#printFor symmetry, you can use+instead of either ".+1p" or an empty line (just a newline).The only advantage that + has is that you can repeat it:++prints the second following line, and +++the third.  The same is true of -.  If the current line isline number 10, what line number is -- going to be?(Hint:  you can find out by editing a file such as "pres",saying "10p", and then saying "--",and then saying ".=" - remember the "=" command?)When you find out, type "answer N" whereN is the number.#create presGeorge WashingtonJohn AdamsThomas JeffersonJames MadisonJames MonroeJohn Quincy AdamsAndrew JacksonMartin van BurenWilliam Henry HarrisonJohn TylerJames K. PolkFranklin PierceMillard FillmoreJames BuchananAbraham Lincoln#copyin#user#uncopyin#match 8#log#next60.1a 1060.2a 5

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