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單項選擇題

A System p administrator wishes to create a template file to monitor performance. Having found a template from January, 
how can the administrator create a July template without destroying the original January version ()

A.vi jan.template :%s/Jan/Jul/g :w jul.template :q!
B.cat jan.template sed s:Jan:Jul: > jan.template
C.vi jan.template :1,$ replace Jan Jul [Esc] ZZ
D.vi jan.template :w jul.template :1,$ s/Jan/Jul/g :q!

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