sunrise@ubuntu:/$ sudo apt install ros-foxy-ros-base ros-foxy_demo-nodes-cpp
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package ros-foxy_demo-nodes-cpp
sunrise@ubuntu:/$ sudo apt install ros-foxy-ros-base ros-foxy_demo-nodes-cpp
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package ros-foxy_demo-nodes-cpp
按照2.5章节配置好后可以search并install成功:
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