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|00000000| 46 72 6f 6d 20 66 72 65 | 64 40 67 79 6d 62 6c 65 |From fre|d@gymble|
|00000010| 2e 55 55 43 50 20 28 46 | 72 65 64 20 42 6c 6f 6e |.UUCP (F|red Blon|
|00000020| 64 65 72 29 20 46 72 69 | 20 4a 75 6e 20 32 31 20 |der) Fri| Jun 21 |
|00000030| 30 30 3a 33 34 3a 35 33 | 20 31 39 38 35 0a 52 65 |00:34:53| 1985.Re|
|00000040| 6c 61 79 2d 56 65 72 73 | 69 6f 6e 3a 20 76 65 72 |lay-Vers|ion: ver|
|00000050| 73 69 6f 6e 20 42 20 32 | 2e 31 30 2e 32 20 39 2f |sion B 2|.10.2 9/|
|00000060| 31 38 2f 38 34 3b 20 73 | 69 74 65 20 67 61 74 65 |18/84; s|ite gate|
|00000070| 63 68 2e 43 53 4e 45 54 | 0a 50 6f 73 74 69 6e 67 |ch.CSNET|.Posting|
|00000080| 2d 56 65 72 73 69 6f 6e | 3a 20 76 65 72 73 69 6f |-Version|: versio|
|00000090| 6e 20 42 20 32 2e 31 30 | 2e 31 20 36 2f 32 34 2f |n B 2.10|.1 6/24/|
|000000a0| 38 33 3b 20 73 69 74 65 | 20 67 79 6d 62 6c 65 2e |83; site| gymble.|
|000000b0| 55 55 43 50 0a 50 61 74 | 68 3a 20 67 61 74 65 63 |UUCP.Pat|h: gatec|
|000000c0| 68 21 61 6b 67 75 61 21 | 77 68 75 78 6c 6d 21 77 |h!akgua!|whuxlm!w|
|000000d0| 68 75 78 6c 21 68 6f 75 | 78 6d 21 69 68 6e 70 34 |huxl!hou|xm!ihnp4|
|000000e0| 21 6d 68 75 78 6e 21 6d | 68 75 78 72 21 75 6c 79 |!mhuxn!m|huxr!uly|
|000000f0| 73 73 65 73 21 61 6c 6c | 65 67 72 61 21 6d 69 74 |sses!all|egra!mit|
|00000100| 2d 65 64 64 69 65 21 67 | 65 6e 72 61 64 21 70 61 |-eddie!g|enrad!pa|
|00000110| 6e 64 61 21 74 61 6c 63 | 6f 74 74 21 68 61 72 76 |nda!talc|ott!harv|
|00000120| 61 72 64 21 73 65 69 73 | 6d 6f 21 75 6d 63 70 2d |ard!seis|mo!umcp-|
|00000130| 63 73 21 67 79 6d 62 6c | 65 21 66 72 65 64 0a 46 |cs!gymbl|e!fred.F|
|00000140| 72 6f 6d 3a 20 66 72 65 | 64 40 67 79 6d 62 6c 65 |rom: fre|d@gymble|
|00000150| 2e 55 55 43 50 20 28 46 | 72 65 64 20 42 6c 6f 6e |.UUCP (F|red Blon|
|00000160| 64 65 72 29 0a 4e 65 77 | 73 67 72 6f 75 70 73 3a |der).New|sgroups:|
|00000170| 20 6e 65 74 2e 73 6f 75 | 72 63 65 73 0a 53 75 62 | net.sou|rces.Sub|
|00000180| 6a 65 63 74 3a 20 60 60 | 66 69 6c 65 20 64 65 73 |ject: ``|file des|
|00000190| 63 72 69 70 74 6f 72 27 | 27 20 70 73 65 75 64 6f |criptor'|' pseudo|
|000001a0| 2d 64 65 76 69 63 65 20 | 64 72 69 76 65 72 20 66 |-device |driver f|
|000001b0| 6f 72 20 34 2e 32 42 53 | 44 0a 4d 65 73 73 61 67 |or 4.2BS|D.Messag|
|000001c0| 65 2d 49 44 3a 20 3c 31 | 37 33 40 67 79 6d 62 6c |e-ID: <1|73@gymbl|
|000001d0| 65 2e 55 55 43 50 3e 0a | 44 61 74 65 3a 20 32 31 |e.UUCP>.|Date: 21|
|000001e0| 20 4a 75 6e 20 38 35 20 | 30 34 3a 33 34 3a 35 33 | Jun 85 |04:34:53|
|000001f0| 20 47 4d 54 0a 44 61 74 | 65 2d 52 65 63 65 69 76 | GMT.Dat|e-Receiv|
|00000200| 65 64 3a 20 32 33 20 4a | 75 6e 20 38 35 20 30 33 |ed: 23 J|un 85 03|
|00000210| 3a 32 39 3a 35 33 20 47 | 4d 54 0a 44 69 73 74 72 |:29:53 G|MT.Distr|
|00000220| 69 62 75 74 69 6f 6e 3a | 20 6e 65 74 0a 4f 72 67 |ibution:| net.Org|
|00000230| 61 6e 69 7a 61 74 69 6f | 6e 3a 20 55 20 6f 66 20 |anizatio|n: U of |
|00000240| 4d 61 72 79 6c 61 6e 64 | 2c 20 4c 61 62 6f 72 61 |Maryland|, Labora|
|00000250| 74 6f 72 79 20 66 6f 72 | 20 50 61 72 61 6c 6c 65 |tory for| Paralle|
|00000260| 6c 20 43 6f 6d 70 75 74 | 61 74 69 6f 6e 2c 20 43 |l Comput|ation, C|
|00000270| 2e 50 2e 2c 20 4d 44 0a | 4c 69 6e 65 73 3a 20 32 |.P., MD.|Lines: 2|
|00000280| 37 32 0a 0a 49 27 6d 20 | 72 65 2d 70 6f 73 74 69 |72..I'm |re-posti|
|00000290| 6e 67 20 74 68 69 73 20 | 64 75 65 20 74 6f 20 70 |ng this |due to p|
|000002a0| 6f 70 75 6c 61 72 20 64 | 65 6d 61 6e 64 3a 0a 0a |opular d|emand:..|
|000002b0| 54 68 69 73 20 69 73 20 | 61 20 70 73 65 75 64 6f |This is |a pseudo|
|000002c0| 2d 64 65 76 69 63 65 20 | 64 72 69 76 65 72 20 77 |-device |driver w|
|000002d0| 68 69 63 68 20 69 6d 70 | 6c 65 6d 65 6e 74 73 20 |hich imp|lements |
|000002e0| 61 0a 73 65 72 69 65 73 | 20 6f 66 20 64 65 76 69 |a.series| of devi|
|000002f0| 63 65 73 3a 20 2f 64 65 | 76 2f 66 64 30 20 2d 20 |ces: /de|v/fd0 - |
|00000300| 2f 64 65 76 2f 66 64 31 | 39 20 77 68 69 63 68 20 |/dev/fd1|9 which |
|00000310| 61 72 65 0a 73 75 72 72 | 65 70 74 69 74 69 6f 75 |are.surr|eptitiou|
|00000320| 73 6c 79 20 65 71 75 69 | 76 61 6c 65 6e 63 65 64 |sly equi|valenced|
|00000330| 20 74 6f 20 77 68 61 74 | 65 76 65 72 20 66 69 6c | to what|ever fil|
|00000340| 65 20 28 69 66 0a 61 6e | 79 29 20 69 73 20 61 73 |e (if.an|y) is as|
|00000350| 73 6f 63 69 61 74 65 64 | 20 77 69 74 68 20 74 68 |sociated| with th|
|00000360| 65 20 63 6f 72 72 65 73 | 70 6f 6e 64 69 6e 67 20 |e corres|ponding |
|00000370| 66 69 6c 65 0a 64 65 73 | 63 72 69 70 74 6f 72 20 |file.des|criptor |
|00000380| 69 6e 20 74 68 65 20 70 | 72 6f 63 65 73 73 20 77 |in the p|rocess w|
|00000390| 68 69 63 68 20 69 73 20 | 61 74 74 65 6d 70 74 69 |hich is |attempti|
|000003a0| 6e 67 20 74 6f 0a 6f 70 | 65 6e 20 74 68 61 74 20 |ng to.op|en that |
|000003b0| 66 69 6c 65 2e 20 49 6e | 20 6f 74 68 65 72 20 77 |file. In| other w|
|000003c0| 6f 72 64 73 3a 20 6f 70 | 65 6e 69 6e 67 20 74 68 |ords: op|ening th|
|000003d0| 65 20 66 69 6c 65 0a 2f | 64 65 76 2f 66 64 3c 6e |e file./|dev/fd<n|
|000003e0| 3e 20 69 73 20 61 6c 6d | 6f 73 74 20 74 68 65 20 |> is alm|ost the |
|000003f0| 73 61 6d 65 20 61 73 20 | 64 6f 69 6e 67 20 74 68 |same as |doing th|
|00000400| 65 20 73 79 73 74 65 6d | 0a 63 61 6c 6c 3a 20 64 |e system|.call: d|
|00000410| 75 70 28 6e 29 2e 20 49 | 74 27 73 20 64 69 66 66 |up(n). I|t's diff|
|00000420| 65 72 65 6e 74 20 69 6e | 20 74 68 61 74 20 69 66 |erent in| that if|
|00000430| 20 74 68 65 20 66 69 6c | 65 0a 69 73 20 61 20 64 | the fil|e.is a d|
|00000440| 65 76 69 63 65 2c 20 74 | 68 65 20 64 72 69 76 65 |evice, t|he drive|
|00000450| 72 27 73 20 6f 70 65 6e | 20 72 6f 75 74 69 6e 65 |r's open| routine|
|00000460| 20 69 73 20 63 61 6c 6c | 65 64 2e 0a 49 66 20 74 | is call|ed..If t|
|00000470| 68 65 20 63 6f 72 72 65 | 73 70 6f 6e 64 69 6e 67 |he corre|sponding|
|00000480| 20 66 69 6c 65 20 64 65 | 73 63 72 69 70 74 6f 72 | file de|scriptor|
|00000490| 20 69 73 20 61 20 70 69 | 70 65 0a 28 73 6f 63 6b | is a pi|pe.(sock|
|000004a0| 65 74 29 20 61 20 64 75 | 70 28 29 20 73 79 73 20 |et) a du|p() sys |
|000004b0| 63 61 6c 6c 20 69 73 20 | 66 61 6b 65 64 2e 0a 0a |call is |faked...|
|000004c0| 54 68 69 73 20 63 61 6e | 20 62 65 20 75 73 65 64 |This can| be used|
|000004d0| 20 74 6f 20 66 6f 72 63 | 65 20 70 72 6f 67 72 61 | to forc|e progra|
|000004e0| 6d 73 20 74 6f 20 72 65 | 61 64 20 66 72 6f 6d 0a |ms to re|ad from.|
|000004f0| 74 68 65 69 72 20 73 74 | 61 6e 64 61 72 64 20 69 |their st|andard i|
|00000500| 6e 70 75 74 2c 20 6f 72 | 20 77 72 69 74 65 20 74 |nput, or| write t|
|00000510| 6f 20 74 68 65 69 72 20 | 73 74 61 6e 64 61 72 64 |o their |standard|
|00000520| 0a 6f 75 74 70 75 74 2c | 20 65 76 65 6e 20 69 66 |.output,| even if|
|00000530| 20 74 68 65 79 20 68 61 | 76 65 6e 27 74 20 62 65 | they ha|ven't be|
|00000540| 65 6e 20 64 65 73 69 67 | 6e 65 64 20 74 6f 20 64 |en desig|ned to d|
|00000550| 6f 0a 73 6f 2e 20 20 46 | 6f 72 20 69 6e 73 74 61 |o.so.  F|or insta|
|00000560| 6e 63 65 3a 0a 0a 09 6c | 6e 20 2d 73 20 2f 64 65 |nce:...l|n -s /de|
|00000570| 76 2f 66 64 30 20 78 78 | 2e 63 0a 09 63 63 20 78 |v/fd0 xx|.c..cc x|
|00000580| 78 2e 63 0a 09 7b 20 54 | 79 70 65 20 61 20 43 20 |x.c..{ T|ype a C |
|00000590| 70 72 6f 67 72 61 6d 20 | 68 65 72 65 2e 20 7d 0a |program |here. }.|
|000005a0| 09 5e 44 0a 09 61 2e 6f | 75 74 0a 0a 4f 72 2c 20 |.^D..a.o|ut..Or, |
|000005b0| 74 6f 20 73 65 65 20 69 | 66 20 61 20 63 65 72 74 |to see i|f a cert|
|000005c0| 61 69 6e 20 73 6f 75 72 | 63 65 20 66 69 6c 65 20 |ain sour|ce file |
|000005d0| 63 6f 6d 70 69 6c 65 64 | 20 69 6e 74 6f 20 61 0a |compiled| into a.|
|000005e0| 70 61 72 74 69 63 75 6c | 61 72 20 6f 62 6a 65 63 |particul|ar objec|
|000005f0| 74 20 66 69 6c 65 3a 0a | 0a 09 63 63 20 73 6f 75 |t file:.|..cc sou|
|00000600| 72 63 65 2e 63 20 2d 6f | 20 2f 64 65 76 2f 66 64 |rce.c -o| /dev/fd|
|00000610| 31 20 7c 20 63 6d 70 20 | 2d 20 6f 62 6a 65 63 74 |1 | cmp |- object|
|00000620| 66 69 6c 65 0a 0a 42 65 | 20 73 75 72 65 20 74 6f |file..Be| sure to|
|00000630| 20 6d 61 6b 65 20 74 68 | 65 73 65 20 6d 6f 64 73 | make th|ese mods|
|00000640| 20 69 6e 20 79 6f 75 72 | 20 63 6f 6e 66 20 64 69 | in your| conf di|
|00000650| 72 65 63 74 6f 72 79 2e | 0a 0a 49 6e 20 74 68 65 |rectory.|..In the|
|00000660| 20 63 6f 6e 66 69 67 20 | 66 69 6c 65 3a 0a 09 70 | config |file:..p|
|00000670| 73 65 75 64 6f 2d 64 65 | 76 69 63 65 09 66 64 0a |seudo-de|vice.fd.|
|00000680| 0a 49 6e 20 74 68 65 20 | 60 60 66 69 6c 65 73 27 |.In the |``files'|
|00000690| 27 20 66 69 6c 65 3a 0a | 09 73 79 73 2f 64 65 76 |' file:.|.sys/dev|
|000006a0| 5f 66 64 2e 63 09 09 6f | 70 74 69 6f 6e 61 6c 20 |_fd.c..o|ptional |
|000006b0| 66 64 0a 0a 3c 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |fd..<***|********|
|000006c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000006d0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000006e0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000006f0| 2a 2a 2a 3e 0a          |                         |***>.   |        |
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