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xatier/ed

Created August 25, 2012 04:16
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ed
$ ed foo
foo: 沒有此一檔案或目錄
a
hello, ed
.
1p
hello, ed
1c
hello, ed, the oldest editor!
.
1p
hello, ed, the oldest editor!
w
30
q
$ cat foo
hello, ed, the oldest editor!
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