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Annotation of 42BSD/usr.lib/learn/editor/L10.1b, revision 1.1

1.1     ! root        1: #print
        !             2: You can of course combine the various sorts
        !             3: of line addresses we have been using.
        !             4: Suppose the last line is line 6; then $ is
        !             5: line 6, and $-1 is line 5.  Thus $-1 is the
        !             6: next to last line, and 
        !             7:   1,$-1p
        !             8: prints all but the last line of a file.  Again,
        !             9: I'll put you in the editor: print the last three lines
        !            10: of the file.  End with the usual w, q, and ready.
        !            11: #create Ref
        !            12: : Gil Hodges
        !            13:  Yogi Berra
        !            14:  Roy McMillan
        !            15: :"file" 6 lines, 89 characters
        !            16: #create file
        !            17: New York Mets Managers
        !            18:  Casey Stengel
        !            19:  Wes Westrum
        !            20:  Gil Hodges
        !            21:  Yogi Berra
        !            22:  Roy McMillan
        !            23: #copyout
        !            24: #pipe
        !            25: ex +'set prompt noopt open' file
        !            26: #user
        !            27: #unpipe
        !            28: #uncopyout
        !            29: tail -4 .ocopy >X1
        !            30: #cmp X1 Ref 4
        !            31: #fail
        !            32: I hope you realized the addresses had to be
        !            33:   $-2,$p
        !            34: to get the last three lines.
        !            35: #log
        !            36: #next
        !            37: 11.1a 10
        !            38: 11.2a 5

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