Get home directory in Linux

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You need getuid to get the user id of the current user and then getpwuid to get the password entry (which includes the home directory) of that user:

#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>

struct passwd *pw = getpwuid(getuid());

const char *homedir = pw->pw_dir;

Note: if you need this in a threaded application, you’ll want to use getpwuid_r instead.

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