Run the following R code
system("sleep 10 &>> test.log")
under R 3.3.3, it correctly sleeps 10 secs, but under R 3.4.1, it exits immediately, looks like sleep 10 & >> test.log.
Is it a bug, since I don't find anything changed made to system() from R 3.3 to 3.4 at https://cran.r-project.org/doc/manuals/r-release/NEWS.html?
The problem is resolved at "&>>" in sh behaves differently in Ubuntu 16.04.2 and Fedora 24