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#include <unistd.h>#include <stdlib.h>#include <stdio.h>int main(int argc, char** argv){        char buffer[500];        int i = 0;        buffer[500] = 0;        getcwd(buffer, 499);        printf("Current directory was: %s\n", buffer);        chdir("/bin");        getcwd(buffer, 499);        printf("Current directory is now: %s\n", buffer);        return 0;}/*leftwing@romulus tmp $ cc -g gistest.c -o gistest && ./gistestCurrent directory was: /tmpCurrent directory is now: /usr/bin*/