📄 de.9
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7086 V(\(1024)281 936 A1247(bytes)S1532(exactly\))S1953(to)S2077(the)S2255(output)S2593(\256le.)S8427 VEP%%Page: 4 4BP/slant 0 def/height 0 def1130 V12 B936(4)S1380 V12 R1116(When)S1437(a)S1524(\256le)S1712(is)S1826(deleted)S2209(using)S12 I2504(unlink)S12 R2840(the)S(i-node)309 3022 A3365(number)S3768(in)S3896(the)S4078(directory)S4550(is)S4665(zeroed,)S1518 V936(but)S1131(before)S1482(its)S1638(removal,)S2106(it)S2215(is)S2337(copied)S2700(into)S2929(the)S3118(end)S3333(of)S3475(the)S3664(\256le)S3859(name)S4161(\256eld.)S4446(This)S4701(allows)S1656 V936(the)S(i-node)309 1115 A1455(of)S1587(a)S1672(deleted)S2053(\256le)S2239(to)S2364(be)S(found)281 2509 A2822(by)S2974(searching)S(through)375 3470 A3877(a)S3963(directory.)S4463(The)S12 I4683(x)S12 R4769(com-)S1794 V936(mand)S1258(asks)S1520(for)S1716(the)S1918(path)S2179(name)S2494(of)S2648(a)S2755(lost)S2983(\256le,)S3221(extracts)S3652(the)S3853(old)S(i-node)309 4060 A4422(number)S4844(and)S1932 V936(changes)S1355(the)S1533(current)S1907(disk)S2138(address)S2531(to)S2655(the)S2833(start)S3073(of)S3204(the)S(i-node.)339 3382 A2106 V1116(Once)S1410(an)S(i-node)309 1562 A1909(is)S(found,)311 2028 A2377(all)S2537(of)S2676(the)S2863(freed)S3152(blocks)S3506(may)S3753(be)S3906(recovered)S4423(by)S4582(checking)S2244 V936(the)S(i-node)309 1131 A1487(zone)S1762(\256elds,)S2101(using)S2409('G')S2626(to)S2767(go)S2934(to)S3075(a)S3176(block,)S(writing)351 3521 A3919(it)S4034(back)S4309(out)S4510(using)S4818('w',)S2382 V936(going)S1242(back)S1502(to)S1628(the)S(i-node)309 1808 A2149(with)S12 I2397(p)S12 R2489(and)S2695(advancing)S3223(to)S3349(the)S3529(next)S3769(block.)S4099(This)S4346(\256le)S4533(extraction)S2520 V936(process)S1353(is)S1488(automated)S2046(by)S2220(using)S2535(the)S12 I2737(X)S12 R2865(command,)S3425(which)S3775(goes)S(through)375 4050 A4478(the)S(i-node,)339 4679 A2658 V936(indirect)S1343(and)S(double)328 1553 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A3337(blocks)S3705(and)S(will)190 3931 A4173(keep)S4453(its)S4620(ef\256cient)S3696 V936(storage)S1317(scheme.)S1771(This)S2017(property)S2458(of)S2590(the)S12 I2769(X)S12 R2874(command)S3381(may)S3620(be)S3765(used)S4017(to)S4142(move)S4442(a)S4528(sparse)S4863(\256le)S3834 V936(from)S1202(one)S1406(device)S1752(to)S1876(another.)S4008 V1116(Automatic)S1678(recovery)S2152(may)S2410(be)S(initiated)398 2574 A3022(by)S3192(the)S12 B3390(\261r)S12 R3554(option)S3912(on)S4082(the)S4280(command)S4806(line.)S4146 V936(Also)S1215(speci\256ed)S1695(is)S1826(the)S2024(path)S2281(name)S2592(of)S2742(a)S2845(\256le)S3049(just)S3273(removed)S3745(by)S12 I3914(unlink)S12 R4216(.)S12 I4295(De)S12 R4486(determines)S4284 V936(which)S(mounted)422 1268 A1726(\256le)S1917(system)S2289(device)S2641(held)S2886(the)S3071(\256le)S3263(and)S3474(opens)S3792(it)S3897(for)S4076(reading.)S4506(The)S4731(lost)S4943(i-)S4422 V(node)234 936 A1201(is)S(found)281 1313 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