If the artifacts to clean don't exist, rm(1) will emit a warning which may worry the user. But there is nothing to worry about, so silence the warning with the -f flag.
Similarly, if the bin/ directory already exists, mkdir(1) will emit an unnecessary warning, so add the -p flag.
If the artifacts to clean don't exist,
rm(1)will emit a warning which may worry the user. But there is nothing to worry about, so silence the warning with the-fflag.Similarly, if the bin/ directory already exists,
mkdir(1)will emit an unnecessary warning, so add the-pflag.