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cat.c - 9base - revived minimalist port of Plan 9 userland to Unix |
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git clone git://git.suckless.org/9base |
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cat.c (532B) |
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1 #include <u.h> |
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2 #include <libc.h> |
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3 |
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4 void |
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5 cat(int f, char *s) |
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6 { |
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7 char buf[8192]; |
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8 long n; |
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9 |
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10 while((n=read(f, buf, (long)sizeof buf))>0) |
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11 if(write(1, buf, n)!=n) |
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12 sysfatal("write error copying %s: %r", s); |
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13 if(n < 0) |
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14 sysfatal("error reading %s: %r", s); |
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15 } |
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16 |
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17 void |
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18 main(int argc, char *argv[]) |
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19 { |
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20 int f, i; |
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21 |
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22 argv0 = "cat"; |
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23 if(argc == 1) |
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24 cat(0, "<stdin>"); |
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25 else for(i=1; i<argc; i++){ |
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26 f = open(argv[i], OREAD); |
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27 if(f < 0) |
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28 sysfatal("can't open %s: %r", argv[i]); |
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29 else{ |
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30 cat(f, argv[i]); |
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31 close(f); |
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32 } |
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33 } |
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34 exits(0); |
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35 } |
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36 |
