[quote="wjwwood, post:5, topic:1236"] That's surprising since we've never run into this on our Xenial machines. Perhaps you have a flavor of Ubuntu that is setting some additional security settings? According to their wiki you can set LD_LIBRARY_PATH so long as it is in an interactive shell: https://help.ubuntu.com/community/EnvironmentVariables#File-location_related_variables This sounds like one of the features macOS's SIP system (which we have to disable to get our binaries to work on macOS): en.wikipedia.org System Integrity Protection System Integrity Protection (SIP, sometimes referred to as rootless) is a security feature of Apple's macOS operating system introduced in OS X El Capitan. It comprises a number of mechanisms that are enforced by the kernel. A centerpiece is the protection of system-owned files and directories against modifications by processes without a specific "entitlement", even when executed by the root user or a user with root privileges (sudo). Apple says that the root user can be a significant risk factor... [/quote] I ran into this reference suggesting that if you're in the group utmp it will be removed? https://superuser.com/questions/27376/why-does-my-ld-library-path-get-unset-launching-terminal @ufechner7 are you running your tests inside a temporary user account or have you turned on higher than usual security? In the man for ld.so(8) ``` LD_LIBRARY_PATH A list of directories in which to search for ELF libraries at execution-time. The items in the list are separated by either colons or semicolons. Similar to the PATH environment variable. This variable is ignored in secure-execution mode. ``` --- [Visit Topic](https://discourse.ros.org/t/ros2-beta-on-ubuntu-16-04-fails/1236/8) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: