38 lines
639 B
C
38 lines
639 B
C
/*
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Popen/Pclose Demo by Andrei Borovsky <borovsky@tochka.ru>.
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This code is freeware.
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*/
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#include <stdio.h>
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#include <errno.h>
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#define BUF_SIZE 0x100
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int main(int argc, char * argv[])
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{
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FILE * f;
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FILE * o;
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int len;
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char buf[BUF_SIZE];
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if (argc != 2)
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{
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printf("использование: makelog \"<command>\"\n");
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return -1;
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}
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f = popen(argv[1], "r");
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if (f == NULL)
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{
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perror("ошибка:\n");
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return -1;
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}
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o = fopen("log.txt", "w");
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while ((len = fread(buf, 1, BUF_SIZE, f)) != 0)
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{
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write(1, buf, len);
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fwrite(buf, 1, len, o);
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}
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pclose(f);
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fclose(o);
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return 0;
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}
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