Truss and:
```
/usr/tests/usr.bin/xinstall # kyua test
install_test:copy_self -> passed [0.036s]
install_test:copy_self_comparing -> passed [0.035s]
install_test:copy_self_safe -> passed [0.035s]
install_test:copy_self_safe_comparing -> passed [0.035s]
install_test:copy_to_nonexistent -> passed [0.035s]
install_test:copy_to_nonexistent_backup -> passed [0.035s]
install_test:copy_to_nonexistent_backup_safe -> passed [0.035s]
install_test:copy_to_nonexistent_comparing -> passed [0.035s]
install_test:copy_to_nonexistent_preserving -> passed [0.035s]
install_test:copy_to_nonexistent_safe -> passed [0.035s]
install_test:copy_to_nonexistent_safe_comparing -> passed [0.035s]
install_test:hard_link -> passed [0.033s]
install_test:mkdir_simple -> passed [0.052s]
install_test:overwrite -> passed [0.035s]
install_test:overwrite_backup -> passed [0.036s]
install_test:overwrite_backup_comparing -> passed [0.037s]
install_test:overwrite_backup_safe -> passed [0.036s]
install_test:overwrite_backup_safe_comparing -> passed [0.037s]
install_test:overwrite_comparing -> passed [0.035s]
install_test:overwrite_eq -> passed [0.035s]
install_test:overwrite_eq_comparing -> passed [0.035s]
install_test:overwrite_eq_safe -> passed [0.035s]
install_test:overwrite_eq_safe_comparing -> passed [0.035s]
install_test:overwrite_safe -> passed [0.035s]
install_test:overwrite_safe_comparing -> passed [0.035s]
install_test:strip_changing -> passed [0.045s]
install_test:strip_changing_comparing -> passed [0.045s]
install_test:strip_changing_overwrite -> passed [0.045s]
install_test:strip_changing_overwrite_comparing -> passed [0.045s]
install_test:strip_changing_overwrite_eq -> passed [0.045s]
install_test:strip_changing_overwrite_eq_comparing -> passed [0.045s]
install_test:strip_noop -> passed [0.038s]
install_test:symbolic_link -> passed [0.035s]
install_test:symbolic_link_absolute -> passed [0.036s]
install_test:symbolic_link_relative -> passed [0.036s]
Results file id is usr_tests_usr.bin_xinstall.20160809-192916-083663
Results saved to /root/.kyua/store/results.usr_tests_usr.bin_xinstall.20160809-192916-083663.db
35/35 passed (0 failed)
```