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📄 dd.1

📁 操作系统设计与实现源码
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%!PS-Adobe-1.0%%Creator: devps (Pipeline Associates, Inc.)%%CreationDate: Fri Sep 13 13:03:31 1996%%Pages: (atend)%%DocumentFonts: (atend)/devps 180 dict def devps begin/res 10.000000 def/y_offset 843 def/X{exch}bind def/mm {transform round X round X itransform} bind def/r{rmoveto}bind def/m{moveto}bind def/l{lineto}bind def/rl{rlineto}bind def/st{stroke}bind def/gs{gsave}bind def/gr{grestore}bind def/cp{currentpoint}bind def/np{newpath}bind def/ct{curveto}bind defsystemdict /setpacking known { /savepacking currentpacking def true setpacking } if/m0{0 0 moveto}bind def/xc{//res div}bind def/yc{//res neg div //y_offset add}bind def/lc{yc X xc X l st}bind def/mc{yc X xc X m}bind def/el{gs /a X def a div 1 X scale cp np a xc 2 div 0 360 arc st gr}bind def/ar{cp 7 2 roll np xc 5 1 roll atan 3 1 roll atan X arc st}bind def/sp{yc X xc X 6 2 roll yc X xc X 6 2 roll yc X xc X 6 2 roll ct}bind def/V{//res neg div //y_offset addcurrentpoint pop Xm}bind def/H{//res div0 transform X round X itransform popcurrentpoint X popmoveto}bind def/h{//res div 0 r}bind def/v{//res neg div 0 X r}bind def/S{X H show}bind def/A{H //res div 1 index stringwidth pop sub 1 index length div 0 3 2 roll ashow}bind def/psize 10 def/height 0 def/cheight { height 0 ne { height } { psize } ifelse } bind def/slant 0 def/FF{findfont X dup 30 div 0 mm pop setlinewidth /psize X def    [psize 0 cheight slant sin slant cos div mul cheight 0 0]    makefont setfont}bind def/shade{gs /dy X def /dx X def np m 0 /dy rl /dx 0 rl 0 /dy neg rl /dx neg 0 rl closepath .9 setgray fillgr}bind def1 setlinecap/resolution res 72 mul def/startFig {	/SavedState save def	userdict maxlength dict begin	currentpoint transform	DocumentInitState setmiterlimit setgray setdash setlinejoin setlinecap		setlinewidth setmatrix	itransform moveto	/ury exch def	/urx exch def	/lly exch def	/llx exch def	/y exch 72 mul resolution div def	/x exch 72 mul resolution div def		currentpoint /cy exch def /cx exch def	/sx x urx llx sub div def	/sy y ury lly sub div def	sx sy scale	cx sx div llx sub	cy sy div ury sub translate		/DefFigCTM matrix currentmatrix def	/initmatrix {		DefFigCTM setmatrix	} def	/defaultmatrix {		DefFigCTM exch copy	} def	/initgraphics {		DocumentInitState setmiterlimit setgray setdash 			setlinejoin setlinecap setlinewidth setmatrix		DefFigCTM setmatrix	} def	/showpage {		initgraphics	} def}bind  def/clipFig {	currentpoint 6 2 roll	newpath 4 copy	4 2 roll moveto	6 -1 roll exch lineto	exch lineto	exch lineto	closepath clip	newpath	moveto}bind  def/doclip { llx lly urx ury clipFig } def/endFig {	end SavedState restore}bind  def/globalstart {	fontnum psize slant height resolution currentpoint 	pagesave restore gsave }bind  def/globalend {	grestore moveto	/resolution exch def /height exch def	/slant exch def /psize exch def /fontnum exch def	F	/pagesave save def}bind  def/fontnum 1 def systemdict /setpacking known { savepacking setpacking} ifend/BP{save mark devps begin m0/DocumentInitState [ matrix currentmatrix currentlinewidth currentlinecapcurrentlinejoin currentdash currentgray currentmiterlimit ] cvx def}bind def/EP{end cleartomark restore showpage}def/Encoding-1 256 array def0 1 255 {Encoding-1 exch /.notdef put} forEncoding-1 8#301 StandardEncoding 8#101 26 getinterval putinterval %A-BEncoding-1 8#341 StandardEncoding 8#141 26 getinterval putinterval %a-bEncoding-1 8#241 StandardEncoding 8#301 16 getinterval putinterval %accentsEncoding-1 8#373 StandardEncoding 8#365 1 getinterval putinterval %dotlessiEncoding-1dup 8#41 /copyright putdup 8#42 /registered putdup 8#43 /trademark putdup 8#44 /logicalnot putdup 8#45 /Eth putdup 8#46 /eth putdup 8#47 /Thorn putdup 8#50 /thorn putdup 8#51 /brokenbar putdup 8#52 /degree putdup 8#53 /divide putdup 8#54 /multiply putdup 8#55 /minus putdup 8#56 /onehalf putdup 8#57 /onequarter putdup 8#60 /threequarters putdup 8#101 /Aacute putdup 8#102 /Acircumflex putdup 8#103 /Adieresis putdup 8#104 /Agrave putdup 8#105 /Aring putdup 8#106 /Atilde putdup 8#107 /Ccedilla putdup 8#110 /Eacute putdup 8#111 /Ecircumflex putdup 8#112 /Edieresis putdup 8#113 /Egrave putdup 8#114 /Iacute putdup 8#115 /Icircumflex putdup 8#116 /Idieresis putdup 8#117 /Igrave putdup 8#120 /Ntilde putdup 8#121 /Oacute putdup 8#122 /Ocircumflex putdup 8#123 /Odieresis putdup 8#124 /Ograve putdup 8#125 /Otilde putdup 8#126 /Scaron putdup 8#127 /Uacute putdup 8#130 /Ucircumflex putdup 8#131 /Udieresis putdup 8#132 /Ugrave putdup 8#133 /Ydieresis putdup 8#134 /Zcaron putdup 8#135 /aacute putdup 8#136 /acircumflex putdup 8#137 /adieresis putdup 8#140 /agrave putdup 8#141 /aring putdup 8#142 /atilde putdup 8#143 /ccedilla putdup 8#144 /eacute putdup 8#145 /ecircumflex putdup 8#146 /edieresis putdup 8#147 /egrave putdup 8#150 /iacute putdup 8#151 /icircumflex putdup 8#152 /idieresis putdup 8#153 /igrave putdup 8#154 /ntilde putdup 8#155 /oacute putdup 8#156 /ocircumflex putdup 8#157 /odieresis putdup 8#160 /ograve putdup 8#161 /otilde putdup 8#162 /scaron putdup 8#163 /uacute putdup 8#164 /ucircumflex putdup 8#165 /udieresis putdup 8#166 /ugrave putdup 8#167 /ydieresis putdup 8#170 /zcaron putpop/Enc-dict 30 dict defEnc-dict /tmpstr1 50 string putEnc-dict /tmpstr2 50 string putEnc-dict /tmpstr3 50 string dup (Encoding-) exch cvs pop put/AEnc-def { % arguments: the original font's name, encoding nrEnc-dict begintmpstr2 cvs /Enc-no exch def % Remember the number in a stringdup /OrigName exch def % remember the namefindfont dup maxlength dict /newdict exch def % get dictionary for new font{ exch dup /FID ne   { exch newdict 3 1 roll put }   { pop pop } % Ignore FID   ifelse} forallnewdict begin/Encoding  tmpstr3 9 Enc-no putinterval tmpstr3 0 9 Enc-no length add getinterval  cvn load  def % Replace encodingcurrentdict /UniqueID known{ /UniqueID UniqueID Enc-no cvi 49999 mul add def } if % Derive New UniqueIDend % newdict/FNlength OrigName tmpstr1 cvs length def % convert name, remember lengthFNlength 1 add Enc-no length add stringdup 0 OrigName tmpstr1 cvs putintervaldup FNlength (-) putintervaldup FNlength 1 add Enc-no putintervaldup 0 tmpstr1 0 FNlength getinterval putinterval % Add old namecvn dup newdict /FontName 3 2 roll put newdict definefontend % Enc-dict} def/Times-Roman 1 AEnc-def pop/R-1{/Times-Roman-1 FF}def/R{/Times-Roman FF}def/B{/Times-Bold FF}def/I{/Times-Italic FF}def%%EndProlog%%Page: 1 1BP/slant 0 def/height 0 def480 V10 R720(DD)S874(\()S916(1)S974(\))S2696(Eighth)S(Edition)296 2989 A4973(DD)S5127(\()S5169(1)S5227(\))S960 V9 R720(N)S722(NA)S790(AM)S858(ME)S940(E)S1080 V10 R1080(dd)S10 R-11205(-)S10 R1287(disk)S1479(dumper)S1248 V9 R720(S)S722(SY)S774(YN)S842(NO)S910(OP)S978(PS)S1030(SI)S1082(IS)S1115(S)S1368 V10 B1080(dd)S10 R1230([)S10 I1264(option)S1558(=)S1664(value)S10 R1882(])S(...)75 1954 A1536 V9 R720(E)S722(EX)S780(XA)S848(AM)S916(MP)S998(PL)S1050(LE)S1108(ES)S1166(S)S1656 V10 B1080(dd)S1217(if=/dev/fd0)S1708(of=/dev/fd1)S1776 V10 R2080(#)S(Copy)217 2155 A2397(disk)S2589(0)S2664(to)S2767(disk)S2959(1)S1944 V10 B1080(dd)S1217(if=x)S1411(of=y)S1627(bs=1w)S1927(skip=4)S2064 V10 R2080(#)S(Copy)217 2155 A10 I2397(x)S10 R2467(to)S10 I2570(y)S10 R2615(,)S2665(skipping)S3035(4)S3110(words)S2232 V10 B1080(dd)S1217(if=x)S1411(of=y)S1627(count=3)S10 R2080(#)S(Copy)217 2155 A2397(three)S(512)150 2624 A10 R-12774(-)S10 R2831(byte)S3029(blocks)S2400 V9 R720(D)S722(DE)S790(ES)S848(SC)S900(CR)S962(RI)S1024(IP)S1057(PT)S1109(TI)S1167(IO)S1200(ON)S1268(N)S2520 V10 R1080(This)S1290(command)S1717(is)S1815(intended)S2192(for)S(copying)323 2341 A2695(partial)S2984(\256les.)S3233(The)S3421(block)S3675(size,)S3888(skip)S(count,)248 4087 A4367(and)S4544(number)S4883(of)S4999(blocks)S2640 V1080(to)S(copy)195 1183 A1403(can)S1568(be)S1688(speci\256ed.)S2121(The)S2303(options)S2623(are:)S2808 V10 B1260(if)S10 R1347(=)S1429(\256le)S10 R-12160(-)S10 R(Input)212 2242 A2479(\256le)S2633(\(default)S2972(is)S10 I3064(stdin)S10 R3259(\))S2928 V10 B1260(of)S10 R1369(=)S1451(\256le)S10 R-12160(-)S10 R2242(Output)S2546(\256le)S2700(\(default)S3039(is)S3131(standard)S3497(output\))S3048 V10 B1260(ibs)S10 R1408(=)S1490(n)S10 R-12160(-)S10 R(Input)212 2242 A2479(block)S2727(size)S2909(\(default)S(512)150 3248 A3423(bytes\))S3168 V10 B1260(obs)S10 R1430(=)S1512(n)S10 R-12160(-)S10 R2242(Output)S2546(block)S2794(size)S2976(\(default)S3315(is)S(512)150 3407 A3582(bytes\))S3288 V10 B1260(bs)S10 R1380(=)S1462(n)S10 R-12160(-)S10 R2242(Block)S2507(size;)S2717(sets)S10 I2893(ibs)S10 R3035(and)S10 I3205(obs)S10 R3369(\(default)S3708(is)S(512)150 3800 A3975(bytes\))S3408 V10 B1260(skip)S10 R1464(=)S1546(n)S10 R-12160(-)S10 R2242(Skip)S10 I2451(n)S10 R(input)206 2526 A2757(blocks)S3044(before)S3327(reading)S3528 V10 B1260(seek)S10 R1470(=)S1552(n)S10 R-12160(-)S10 R2242(Skip)S10 I2451(n)S10 R2526(output)S2807(blocks)S3094(before)S(writing)291 3377 A3648 V10 B1260(count)S10 R1526(=)S1608(n)S10 R-12160(-)S10 R(Copy)217 2242 A2484(only)S10 I2687(n)S10 R(input)206 2762 A2993(blocks)S3768 V10 B1260(conv)S1486(=)S1568(lcase)S10 R-12160(-)S10 R(Convert)324 2242 A(upper)229 2591 A2845(case)S3044(letters)S3316(to)S3419(lower)S3674(case)S3888 V10 B1260(conv)S1486(=)S1568(ucase)S10 R-12160(-)S10 R(Convert)324 2242 A2591(lower)S2846(case)S3045(letters)S3317(to)S(upper)229 3420 A3674(case)S4008 V10 B1260(conv)S1486(=)S1568(swab)S10 R-12160(-)S10 R2242(Swap)S2491(every)S2740(pair)S2922(of)S3031(bytes)S4128 V10 B1260(conv)S1486(=)S(noerror)336 1568 A10 R-12160(-)S10 R(Ignore)263 2242 A2530(errors)S2791(and)S2961(just)S3131(keep)S3346(going)S4248 V10 B1260(conv)S1486(=)S1568(silent)S10 R-12160(-)S10 R(Suppress)363 2242 A2630(statistics)S3002(\(Minix)S3306(speci\256c)S3639(\257ag\))S4416 V1080(Where)S1382(sizes)S1611(are)S1768(expected,)S2184(they)S2390(are)S2547(in)S2658(bytes.)S2953(However,)S3381(the)S3537(letters)S10 B3817(w)S10 R3890(,)S10 B3948(b)S10 R4004(,)S4063(or)S10 B4181(k)S10 R4271(may)S4478(be)S4607(appended)S5026(to)S5138(the)S4536 V1080(number)S1422(to)S1535(indicate)S1889(words)S2170(\(2)S2289(bytes\),)S2595(blocks)S(\(512)184 2892 A3111(bytes\),)S3417(or)S3535(K)S(\(1024)234 3642 A3910(bytes\),)S4215(respectively.)S4786(When)S10 I5060(dd)S10 R5194(is)S4656 V1080(\256nished,)S1448(it)S1529(reports)S1834(the)S1982(number)S2314(of)S2423(full)S2588(and)S2758(partial)S3041(blocks)S3328(read)S3527(and)S(written.)311 3697 A4824 V9 R720(S)S722(SE)S774(EE)S832(E)S913(A)S915(AL)S983(LS)S1041(SO)S1093(O)S4944 V10 B1080(vol)S10 R1208(\(1\).)S7903 V720(Page)S941(1)S4455(September)S4911(13,)S(1996)200 5061 A8143 VEP%%Trailer%%DocumentFonts: Times-Roman Times-Bold Times-Italic%%Pages: 1

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