popen.3

Unix操作系统minix 2.0源码

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%%CreationDate: Fri Sep 13 13:06:51 1996
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%%EndProlog
%%Page: 1 1
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/slant 0 def
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480 V
10 R
720(POPEN)S
1048(\()S
1090(3)S
1148(\))S
2696(Eighth)S
(Edition)296 2989 A
4799(POPEN)S
5127(\()S
5169(3)S
5227(\))S
960 V
9 R
720(N)S
722(NA)S
790(AM)S
858(ME)S
940(E)S
1080 V
10 R
(popen,)270 1080 A
1375(pclose)S
10 R-1
1657(-)S
10 R
(initiate)280 1739 A
2044(I/O)S
2204(to/from)S
2531(a)S
2601(process)S
1248 V
9 R
720(S)S
722(SY)S
774(YN)S
842(NO)S
910(OP)S
978(PS)S
1030(SI)S
1082(IS)S
1115(S)S
1368 V
10 B
1080(#include)S
1482(<stdio.h>)S
1608 V
1080(FILE)S
1353(*popen\(const)S
1962(char)S
2196(*command,)S
2734(const)S
2996(char)S
3230(*type\))S
1728 V
1080(int)S
1236(pclose\(FILE)S
1806(*stream\))S
1896 V
9 R
720(D)S
722(DE)S
790(ES)S
848(SC)S
900(CR)S
962(RI)S
1024(IP)S
1057(PT)S
1109(TI)S
1167(IO)S
1200(ON)S
1268(N)S
2016 V
10 R
1080(The)S
1275(arguments)S
1732(to)S
10 B
1848(popen)S
10 R
2149(are)S
2311(pointers)S
2673(to)S
2789(null-terminated)S
3448(strings)S
3754(containing)S
4216(respectively)S
4741(a)S
4825(shell)S
5054(com-)S
2136 V
1080(mand)S
1331(line)S
1510(and)S
1683(an)S
1806(I/O)S
1969(mode,)S
2245(either)S
2503("r")S
2647(for)S
2792(reading)S
3121(or)S
3232("w")S
3414(for)S
(writing.)316 3559 A
3927(It)S
4016(creates)S
4324(a)S
4396(pipe)S
4596(between)S
4959(the)S
5109(cal-)S
2256 V
1080(ling)S
1265(process)S
1596(and)S
1770(the)S
1922(command)S
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2454(be)S
2578(executed.)S
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3912(a)S
3987(stream)S
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4782(can)S
4952(be)S
5077(used)S
2376 V
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(input)206 2694 A
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3603(or)S
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4618(output.)S
2544 V
1080(A)S
1185(stream)S
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1940(popen)S
10 R
(should)267 2235 A
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2661(closed)S
2950(by)S
10 B
3082(pclose)S
10 R
3345(,)S
3402(which)S
3680(waits)S
3925(for)S
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2664 V
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2952 V
1080(output)S
1361(\256lter.)S
3120 V
9 R
720(S)S
722(SE)S
774(EE)S
832(E)S
913(A)S
915(AL)S
983(LS)S
1041(SO)S
1093(O)S
3240 V
10 B
1080(pipe)S
10 R
1265(\(2\),)S
10 B
1433(fopen)S
10 R
1674(\(3\),)S
10 B
1842(fclose)S
10 R
2083(\(3\),)S
10 B
2251(system)S
10 R
2542(\(3\),)S
10 B
2710(wait)S
10 R
2895(\(2\),)S
10 B
3063(sh)S
10 R
3158(\(1\).)S
3408 V
9 R
720(D)S
722(DI)S
790(IA)S
823(AG)S
891(GN)S
959(NO)S
1027(OS)S
1095(ST)S
1147(TI)S
1205(IC)S
1238(CS)S
1300(S)S
3528 V
10 B
1080(Popen)S
10 R
1374(returns)S
1679(a)S
1749(null)S
1930(pointer)S
2240(if)S
2327(\256les)S
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(cannot)268 3040 A
3333(be)S
3453(created,)S
3795(or)S
3904(the)S
4052(shell)S
(cannot)268 4267 A
4560(be)S
(accessed.)378 4680 A
3696 V
9 R
720(B)S
722(BU)S
784(UG)S
852(GS)S
920(S)S
3816 V
10 R
1080(Buffered)S
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1791(before)S
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2422(an)S
(input)206 2542 A
2773(\256lter)S
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3425(the)S
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(input)206 3939 A
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3936 V
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4056 V
10 B
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10 R
1321(,)S
1371(see)S
10 B
1525(fclose)S
10 R
1766(\(3\).)S
7903 V
720(Page)S
941(1)S
2669(\()S
2711(May)S
2920(15,)S
(1985)200 3070 A
3278(\))S
4455(September)S
4911(13,)S
(1996)200 5061 A
8143 V
EP
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