但是当我运行最后一个终端命令时收到此错误消息
Configuration file: hostapd.conf
nl80211: Could not configure driver mode
nl80211 driver initialization failed.
hostapd_free_hapd_data: Interface wlan0 wasn't started
我通过 Ubuntu 软件中心安装了 Geany IDE。用 C 编写了一个 hello world prog，它编译成功，但是当我尝试运行它时，它给了我这个错误：
./geany_run_script.sh: 5: ./geany_run_script.sh: ./hello: not found
------------------
(program exited with code: 127)
Press return to continue
有人可以告诉我我该怎么做吗？