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|00000000| 46 72 6f 6d 20 6a 73 71 | 40 63 73 2e 75 74 65 78 |From jsq|@cs.utex|
|00000010| 61 73 2e 65 64 75 20 20 | 4d 6f 6e 20 4d 61 72 20 |as.edu  |Mon Mar |
|00000020| 20 34 20 31 39 3a 31 32 | 3a 31 35 20 31 39 39 31 | 4 19:12|:15 1991|
|00000030| 0a 52 65 63 65 69 76 65 | 64 3a 20 62 79 20 75 75 |.Receive|d: by uu|
|00000040| 6e 65 74 2e 55 55 2e 4e | 45 54 20 77 69 74 68 20 |net.UU.N|ET with |
|00000050| 55 55 43 50 20 28 35 2e | 36 31 2f 55 55 4e 45 54 |UUCP (5.|61/UUNET|
|00000060| 2d 70 72 69 6d 61 72 79 | 2d 67 61 74 65 77 61 79 |-primary|-gateway|
|00000070| 29 0a 09 69 64 20 41 41 | 31 39 32 31 35 3b 20 4d |)..id AA|19215; M|
|00000080| 6f 6e 2c 20 34 20 4d 61 | 72 20 39 31 20 31 39 3a |on, 4 Ma|r 91 19:|
|00000090| 31 32 3a 31 35 20 2d 30 | 35 30 30 0a 52 65 63 65 |12:15 -0|500.Rece|
|000000a0| 69 76 65 64 3a 20 62 79 | 20 63 73 2e 75 74 65 78 |ived: by| cs.utex|
|000000b0| 61 73 2e 65 64 75 20 28 | 35 2e 36 34 2f 31 2e 39 |as.edu (|5.64/1.9|
|000000c0| 35 29 20 0a 46 72 6f 6d | 3a 20 61 6c 65 78 40 61 |5) .From|: alex@a|
|000000d0| 6d 2e 73 75 62 6c 69 6e | 6b 2e 6f 72 67 20 28 41 |m.sublin|k.org (A|
|000000e0| 6c 65 78 20 4d 61 72 74 | 65 6c 6c 69 29 0a 4e 65 |lex Mart|elli).Ne|
|000000f0| 77 73 67 72 6f 75 70 73 | 3a 20 63 6f 6d 70 2e 75 |wsgroups|: comp.u|
|00000100| 6e 69 78 2e 73 68 65 6c | 6c 2c 63 6f 6d 70 2e 73 |nix.shel|l,comp.s|
|00000110| 74 64 2e 75 6e 69 78 0a | 53 75 62 6a 65 63 74 3a |td.unix.|Subject:|
|00000120| 20 52 65 3a 20 52 65 74 | 61 69 6e 69 6e 67 20 66 | Re: Ret|aining f|
|00000130| 69 6c 65 20 70 65 72 6d | 69 73 73 69 6f 6e 73 0a |ile perm|issions.|
|00000140| 4b 65 79 77 6f 72 64 73 | 3a 20 63 68 6d 6f 64 2c |Keywords|: chmod,|
|00000150| 20 73 65 64 2c 20 61 77 | 6b 2e 2e 2e 20 61 6e 64 | sed, aw|k... and|
|00000160| 20 67 6f 6f 64 20 6f 6c | 64 20 2a 63 61 74 2a 21 | good ol|d *cat*!|
|00000170| 0a 4d 65 73 73 61 67 65 | 2d 49 64 3a 20 3c 31 38 |.Message|-Id: <18|
|00000180| 32 39 36 40 63 73 2e 75 | 74 65 78 61 73 2e 65 64 |296@cs.u|texas.ed|
|00000190| 75 3e 0a 52 65 66 65 72 | 65 6e 63 65 73 3a 20 3c |u>.Refer|ences: <|
|000001a0| 36 30 33 39 40 70 74 73 | 66 61 2e 50 61 63 42 65 |6039@pts|fa.PacBe|
|000001b0| 6c 6c 2e 43 4f 4d 3e 20 | 3c 31 39 39 31 46 65 62 |ll.COM> |<1991Feb|
|000001c0| 32 32 2e 30 34 31 38 32 | 36 2e 32 30 31 40 61 74 |22.04182|6.201@at|
|000001d0| 68 65 6e 61 2e 6d 69 74 | 2e 65 64 75 3e 20 3c 31 |hena.mit|.edu> <1|
|000001e0| 39 39 31 46 65 62 32 33 | 2e 32 33 34 32 34 32 2e |991Feb23|.234242.|
|000001f0| 38 31 32 40 61 6d 2e 73 | 75 62 6c 69 6e 6b 2e 6f |812@am.s|ublink.o|
|00000200| 72 67 3e 20 3c 31 39 39 | 31 46 65 62 32 36 2e 31 |rg> <199|1Feb26.1|
|00000210| 35 33 39 33 31 2e 32 37 | 32 35 31 40 61 74 68 65 |53931.27|251@athe|
|00000220| 6e 61 2e 6d 69 74 2e 65 | 64 75 3e 0a 53 65 6e 64 |na.mit.e|du>.Send|
|00000230| 65 72 3a 20 6a 73 71 40 | 63 73 2e 75 74 65 78 61 |er: jsq@|cs.utexa|
|00000240| 73 2e 65 64 75 0a 46 6f | 6c 6c 6f 77 75 70 2d 54 |s.edu.Fo|llowup-T|
|00000250| 6f 3a 20 63 6f 6d 70 2e | 73 74 64 2e 75 6e 69 78 |o: comp.|std.unix|
|00000260| 0a 4f 72 67 61 6e 69 7a | 61 74 69 6f 6e 3a 20 50 |.Organiz|ation: P|
|00000270| 72 65 6d 69 61 74 61 20 | 46 61 6d 69 67 6c 69 61 |remiata |Famiglia|
|00000280| 20 4d 61 72 74 65 6c 6c | 69 20 26 20 46 69 67 6c | Martell|i & Figl|
|00000290| 69 0a 58 2d 53 75 62 6d | 69 73 73 69 6f 6e 73 3a |i.X-Subm|issions:|
|000002a0| 20 73 74 64 2d 75 6e 69 | 78 40 75 75 6e 65 74 2e | std-uni|x@uunet.|
|000002b0| 75 75 2e 6e 65 74 0a 44 | 61 74 65 3a 20 32 20 4d |uu.net.D|ate: 2 M|
|000002c0| 61 72 20 39 31 20 31 35 | 3a 34 38 3a 33 33 20 47 |ar 91 15|:48:33 G|
|000002d0| 4d 54 0a 52 65 70 6c 79 | 2d 54 6f 3a 20 73 74 64 |MT.Reply|-To: std|
|000002e0| 2d 75 6e 69 78 40 75 75 | 6e 65 74 2e 55 55 2e 4e |-unix@uu|net.UU.N|
|000002f0| 45 54 0a 54 6f 3a 20 73 | 74 64 2d 75 6e 69 78 40 |ET.To: s|td-unix@|
|00000300| 75 75 6e 65 74 2e 55 55 | 2e 4e 45 54 0a 0a 53 75 |uunet.UU|.NET..Su|
|00000310| 62 6d 69 74 74 65 64 2d | 62 79 3a 20 61 6c 65 78 |bmitted-|by: alex|
|00000320| 40 61 6d 2e 73 75 62 6c | 69 6e 6b 2e 6f 72 67 20 |@am.subl|ink.org |
|00000330| 28 41 6c 65 78 20 4d 61 | 72 74 65 6c 6c 69 29 0a |(Alex Ma|rtelli).|
|00000340| 0a 6a 69 6b 40 61 74 68 | 65 6e 61 2e 6d 69 74 2e |.jik@ath|ena.mit.|
|00000350| 65 64 75 20 28 4a 6f 6e | 61 74 68 61 6e 20 49 2e |edu (Jon|athan I.|
|00000360| 20 4b 61 6d 65 6e 73 29 | 20 77 72 69 74 65 73 3a | Kamens)| writes:|
|00000370| 0a 09 2e 2e 2e 0a 09 28 | 49 20 61 73 73 65 72 74 |.......(|I assert|
|00000380| 20 74 68 61 74 20 63 61 | 74 20 6f 6e 65 3e 74 77 | that ca|t one>tw|
|00000390| 6f 20 6b 65 65 70 73 20 | 61 6c 6c 20 70 65 72 6d |o keeps |all perm|
|000003a0| 69 73 73 69 6f 6e 20 62 | 69 74 73 20 6f 6e 20 74 |ission b|its on t|
|000003b0| 77 6f 29 0a 3a 59 6f 75 | 20 6d 75 73 74 20 68 61 |wo).:You| must ha|
|000003c0| 76 65 20 61 20 70 72 65 | 74 74 79 20 73 74 72 61 |ve a pre|tty stra|
|000003d0| 6e 67 65 20 76 65 72 73 | 69 6f 6e 20 6f 66 20 63 |nge vers|ion of c|
|000003e0| 61 74 20 6f 6e 20 79 6f | 75 72 20 73 79 73 74 65 |at on yo|ur syste|
|000003f0| 6d 2c 20 6f 72 20 61 0a | 3a 62 72 61 69 6e 2d 64 |m, or a.|:brain-d|
|00000400| 61 6d 61 67 65 64 20 6b | 65 72 6e 65 6c 20 74 68 |amaged k|ernel th|
|00000410| 61 74 20 64 6f 65 73 20 | 6e 6f 74 20 63 6c 65 61 |at does |not clea|
|00000420| 72 20 74 68 65 20 73 65 | 74 75 69 64 20 62 69 74 |r the se|tuid bit|
|00000430| 20 77 68 65 6e 20 61 20 | 66 69 6c 65 0a 3a 69 73 | when a |file.:is|
|00000440| 20 77 72 69 74 74 65 6e | 20 74 6f 2e 0a 0a 49 74 | written| to...It|
|00000450| 27 73 20 6e 6f 74 20 74 | 68 65 20 63 61 74 2d 73 |'s not t|he cat-s|
|00000460| 20 28 49 27 76 65 20 74 | 72 69 65 64 20 62 6f 74 | (I've t|ried bot|
|00000470| 68 20 2f 62 69 6e 2f 63 | 61 74 20 61 6e 64 20 2f |h /bin/c|at and /|
|00000480| 75 73 72 2f 6c 6f 63 61 | 6c 2f 67 6e 75 62 69 6e |usr/loca|l/gnubin|
|00000490| 2f 63 61 74 0a 61 6e 64 | 20 49 20 68 61 76 65 20 |/cat.and| I have |
|000004a0| 74 68 65 20 73 6f 75 72 | 63 65 20 74 6f 20 74 68 |the sour|ce to th|
|000004b0| 65 20 6c 61 74 74 65 72 | 20 73 6f 20 49 20 63 61 |e latter| so I ca|
|000004c0| 6e 20 63 68 65 63 6b 29 | 2c 20 73 6f 20 69 74 20 |n check)|, so it |
|000004d0| 6d 75 73 74 20 62 65 0a | 77 68 61 74 20 79 6f 75 |must be.|what you|
|000004e0| 20 64 65 73 63 72 69 62 | 65 20 61 73 20 22 62 72 | describ|e as "br|
|000004f0| 61 69 6e 2d 64 61 6d 61 | 67 65 22 20 69 6e 20 74 |ain-dama|ge" in t|
|00000500| 68 65 20 6b 65 72 6e 65 | 6c 2e 20 20 50 65 72 73 |he kerne|l.  Pers|
|00000510| 6f 6e 61 6c 6c 79 2c 20 | 49 0a 64 6f 6e 27 74 20 |onally, |I.don't |
|00000520| 73 65 65 20 77 68 79 20 | 6f 70 65 6e 28 29 20 6f |see why |open() o|
|00000530| 72 20 77 72 69 74 65 28 | 29 20 73 68 6f 75 6c 64 |r write(|) should|
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|00000570| 20 61 6c 6c 6f 77 73 20 | 79 6f 75 20 74 6f 20 64 | allows |you to d|
|00000580| 6f 20 73 69 6c 6c 79 20 | 74 68 69 6e 67 73 2c 20 |o silly |things, |
|00000590| 62 75 74 20 74 68 65 6e | 20 69 66 20 79 6f 75 20 |but then| if you |
|000005a0| 63 61 72 65 0a 61 62 6f | 75 74 20 73 65 63 75 72 |care.abo|ut secur|
|000005b0| 69 74 79 20 79 6f 75 20 | 77 6f 6e 27 74 20 6b 65 |ity you |won't ke|
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|000005f0| 2c 20 61 74 20 74 68 65 | 20 73 61 6d 65 20 74 69 |, at the| same ti|
|00000600| 6d 65 2c 20 77 69 6c 6c | 20 79 6f 75 3f 0a 41 6e |me, will| you?.An|
|00000610| 79 77 61 79 20 74 68 65 | 20 61 6c 6c 65 67 65 64 |yway the| alleged|
|00000620| 6c 79 2d 62 72 6f 6b 65 | 6e 20 6b 65 72 6e 65 6c |ly-broke|n kernel|
|00000630| 20 69 73 20 49 6e 74 65 | 72 61 63 74 69 76 65 20 | is Inte|ractive |
|00000640| 32 2e 32 2c 20 62 75 74 | 20 49 20 62 65 6c 69 65 |2.2, but| I belie|
|00000650| 76 65 0a 6f 74 68 65 72 | 73 20 77 69 6c 6c 20 62 |ve.other|s will b|
|00000660| 65 68 61 76 65 20 73 69 | 6d 69 6c 61 72 6c 79 3b |ehave si|milarly;|
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|000006b0| 3a 20 20 49 20 62 65 6c | 69 65 76 65 20 50 4f 53 |:  I bel|ieve POS|
|000006c0| 49 58 20 6d 61 6e 64 61 | 74 65 73 20 74 68 61 74 |IX manda|tes that|
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|000008c0| 69 6f 6e 73 2e 0a 0a 49 | 74 20 77 6f 75 6c 64 20 |ions...I|t would |
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|000009c0| 6f 6e 65 2c 20 74 68 65 | 6e 20 73 6f 20 73 68 6f |one, the|n so sho|
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|00000a10| 72 65 64 69 72 65 63 74 | 65 64 2d 74 6f 0a 66 69 |redirect|ed-to.fi|
|00000a20| 6c 65 20 62 65 66 6f 72 | 65 20 65 78 65 63 27 69 |le befor|e exec'i|
|00000a30| 6e 67 20 63 61 74 3f 3f | 3f 20 49 20 77 6f 75 6c |ng cat??|? I woul|
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|00000a50| 65 20 6e 6f 74 21 29 2e | 20 20 49 20 68 61 76 65 |e not!).|  I have|
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|00000b10| 6d 69 73 73 69 6f 6e 20 | 62 69 74 73 29 2c 20 61 |mission |bits), a|
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|00000b30| 74 20 73 61 79 3f 0a 2d | 2d 20 0a 41 6c 65 78 20 |t say?.-|- .Alex |
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|00000b60| 42 61 72 6f 6e 74 69 6e | 69 20 32 37 2c 20 34 30 |Barontin|i 27, 40|
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|00000c20| 6f 72 6b 20 6f 6e 6c 79 | 29 2c 20 46 69 64 6f 6e |ork only|), Fidon|
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|00000c40| 6f 6d 65 20 6f 6e 6c 79 | 29 2e 0a 0a 56 6f 6c 75 |ome only|)...Volu|
|00000c50| 6d 65 2d 4e 75 6d 62 65 | 72 3a 20 56 6f 6c 75 6d |me-Numbe|r: Volum|
|00000c60| 65 20 32 32 2c 20 4e 75 | 6d 62 65 72 20 31 33 37 |e 22, Nu|mber 137|
|00000c70| 0a 0a                   |                         |..      |        |
+--------+-------------------------+-------------------------+--------+--------+