HelenOS sources

config_key_exists   40 uspace/lib/c/include/config.h extern bool config_key_exists(const char *);
config_key_exists   40 uspace/lib/posix/include/libc/config.h extern bool config_key_exists(const char *);
config_key_exists  498 uspace/srv/hid/output/output.c 	if (!config_key_exists("console")) {
config_key_exists  224 uspace/srv/hid/output/port/chardev.c 	if (!config_key_exists("console")) {
config_key_exists  487 uspace/srv/system/system.c 	if (!config_key_exists("console")) {