Determining user home folder

[alxlabs]

For the console app I used something like this


if ((lgn = getlogin()) == NULL || (pw = getpwnam(lgn)) == NULL)
ALog->append("Get of user information failed.");
else
{
sprintf (tempbuf, "Working folder: %s", pw->pw_dir);
ALog->append(tempbuf);
}


For some reason it does not work for graphic application if started from the shortcut on the desktop (or any other way without a console) - getlogin returns NULL... Any idea how to make it work or do it any other way?

[LaRoza]

Try getenv()



#include <stdio.h>
#include <stdlib.h>
int main(int argc, char ** argv)
{
printf("%s is your $HOME\n",getenv("HOME"));
return 0;
}

[Jessehk]

#include <stdlib.h>

int main( void ) {
char *hd = NULL;

if ( (hd = getenv( "HOME" )) == NULL ) {
/* $HOME environmental variable not set */
}

/* hd contains the path to the user's home directory.
return 0;
}

[alxlabs]

Is it possible that 'HOME' variable is not set? Do all the linux distributions have it set in all cases?

[LaRoza]

Is it possible that 'HOME' variable is not set? Do all the linux distributions have it set?

To log in, you need to have some sort of home.

I never heard of it, but programming for the possibility wouldn't be a bad idea (if a home dir exists, the variable is set, so it shouldn't be a problem)