环境 Ubuntu 16.04 ，ROS kinetic
问题1：
/home/acl/rbx1/build/rbx1_nav/setup_custom_pythonpath.sh: 5: exec: /home/acl/rbx1/src/rbx1_nav/cfg/CalibrateAngular.cfg: Permission denied
/home/acl/rbx1/build/rbx1_nav/setup_custom_pythonpath.sh: 5: exec: /home/acl/rbx1/src/rbx1_nav/cfg/CalibrateLinear.cfg: Permission denied
rbx1_nav/CMakeFiles/rbx1_nav_gencfg.dir/build.make:65: recipe for target '/home/acl/rbx1/devel/include/rbx1_nav/CalibrateAngularConfig.h' failed
make[2]: *** [/home/acl/rbx1/devel/include/rbx1_nav/CalibrateAngularConfig.h] Error 126
make[2]: *** 正在等待未完成的任务....
rbx1_nav/CMakeFiles/rbx1_nav_gencfg.dir/build.make:83: recipe for target '/home/acl/rbx1/devel/include/rbx1_nav/CalibrateLinearConfig.h' failed
make[2]: *** [/home/acl/rbx1/devel/include/rbx1_nav/CalibrateLinearConfig.h] Error 126
CMakeFiles/Makefile2:851: recipe for target 'rbx1_nav/CMakeFiles/rbx1_nav_gencfg.dir/all' failed
make[1]: *** [rbx1_nav/CMakeFiles/rbx1_nav_gencfg.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j4 -l4" failed
解决：
赋予cfg文件夹可执行权限。首先找到你的cfd文件夹的路径（比如我的路径是/home/acl/rbx1/src/rbx1_nav/cfg），然后执行以下指令：
chmod -R +x /home/acl/rbx1/src/rbx1_nav/cfg
问题2：
编译通过后，按照以下指令启动可执行文件时报错：
rosrun rbx1_nav calibrate_linear.py
报错；
[rosrun] Couldn't find executable named calibrate_linear.py below /home/acl/rbx1/src/rbx1_nav
[rosrun] Found the following, but they're either not files,
[rosrun] or not executable:
[rosrun] /home/acl/rbx1/src/rbx1_nav/nodes/calibrate_linear.py
原因：
calibrate_linear.py文件没有可执行权限。
解决：
按照报错的路径找到calibrate_linear.py，右键属性->权限，勾选上“允许作为程序可执行文件（E）”，如下图红框中所示：
再次运行以下指令即可成功运行该文件启动机器人。
rosrun rbx1_nav calibrate_linear.py