#include <stdio.h>
int main(argc, argv)
int argc;
char **argv;
{
FILE *infile;
char cmd[256];
char buf[BUFSIZ];
int n;
if (argc < 1 || argc > 2) {
fprintf(stderr, "usage: %s [file[.gz]]\n", argv[0]);
exit(1);
}
strcpy(cmd, "gzip -dc ");
if (argc == 2) {
strncat(cmd, argv[1], sizeof(cmd)-strlen(cmd));
}
infile = popen(cmd, "r");
if (infile == NULL) {
fprintf(stderr, "%s: popen('%s', 'r') failed\n", argv[0], cmd);
exit(1);
}
n = getc(infile);
if (n == EOF) {
pclose(infile);
exit(0);
}
putchar(n);
for (;;) {
n = fread(buf, 1, BUFSIZ, infile);
if (n <= 0) break;
fwrite(buf, 1, n, stdout);
}
if (pclose(infile) != 0) {
fprintf(stderr, "%s: pclose failed\n", argv[0]);
exit(1);
}
exit(0);
return 0;
}