unsetenv("SHLVL");
unsetenv("_");
+ /* When we are invoked by a tool chroot-like such as
+ * nspawn, these might be set, but make little sense
+ * to pass on */
+ unsetenv("USER");
+ unsetenv("LOGNAME");
+
/* All other variables are left as is, so that clients
* can still read them via /proc/1/environ */
}