clinuxpathstrchr

Find absolute path in linux using strchr

How can we use the function strchr to find absolute path in linux, for example:

Input: /home/test/sample
Output: /home/test

I try to write something like this:

int main() {
char* string = "/home/test/sample";
char* pos;
pos = strchr(string, '/');
printf("%s\n", pos);
return 0;
}

But that's not working, I got the same output as the input:

Input: /home/test/sample
Output: /home/test/sample
Solution

  • Use the dirname function instead:

    #include <libgen.h>
#include <stdio.h>
#include <string.h>

int main()
{
  char* string = strdup ("/home/test/sample");
  char* pos;
  pos = dirname (string);
  printf ("%s\n", pos);
  return 0;
}

    In order to search for the right most occurrence use the strrchr function.