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1.1 root 1: #print
2: Sometimes ? is too flexible, and you
3: only want to allow a few characters. For example,
4: you might want to abbreviate
5: ls memo.ab memo.ac
6: without picking up "memo.ad", "!"memo.ae", and so forth.
7: You can match one of a set of particular characters by
8: putting them in brackets "[]" in the list you use with "ls".
9: For example,
10: [bc]
11: matches either b or c but no other letters.
12: Thus the command
13: ls memo.a[bc]
14: would match "memo.ab", "memo.ac", and nothing else.
15: Try that command in this directory: type a plain
16: "ls" first, and then "ls memo.a[bc]".
17: How many files does "ls memo.a[bc]" match?
18: Type "answer N" where N is the number.
19: #create memo.ab
20: #create memo.abc
21: #create memo.bc
22: #copyin
23: #user
24: #uncopyin
25: #match 1
26: #log
27: #next
28: 7.3b 2
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