27 lines
579 B
C
27 lines
579 B
C
#include <stdio.h> /* fprintf(3), stderr */
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#include <stdlib.h>
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#include <unistd.h> /* getopt(3) */
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static int lines = 10; /* POSIX.1 */
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static char *program_name = "head";
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int main(int argc, char *argv[]){
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int c;
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extern char *optarg;
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extern int opterr, optind, optopt;
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if(argc > 0)
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program_name = argv[0];
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while((c = getopt(argc, argv, "n:")) != -1)
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switch(c){
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case 'n':
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break;
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default:
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#ifdef IGIT /* parse -[digit] options */
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#endif /* ifdef IGIT */
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usage: fprintf(stderr, "Usage: %s (-n [lines]) (file...)\n",
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program_name);
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return EX_USAGE;
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}
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