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1.1 root 1: #print
2: Now, print the fourth line in this file twice,
3: using the same pattern. The file is the same,
4: and you should put the usual finish (w, q, ready)
5: after printing the line.
6: #create Ref
7: 4p
8: .p
9: w
10: q
11: #create file
12: george washington
13: john adams
14: thomas jefferson
15: james madison
16: james monroe
17: john quincy adams
18: #pipe
19: #copyin
20: ex +'set prompt noopt open' file
21: #user
22: #uncopyin
23: #unpipe
24: tail -4 .copy >X1
25: #cmp X1 Ref
26: #log
27: #next
28: 8.1a 10
29: 8.2a 5
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