所以我卸载了cmake，并用更新的版本重新安装了它，路径是正确的，文件在那里，但是每当我尝试运行cmake时，bash都会回显 -bash: /usr/bin/cmake: No such file or directory
pi@raspberrypi /usr/local/bin $ dir
cmake cpack ctest indiecity
pi@raspberrypi /usr/local/bin $ export | grep PATH
declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games"