In /usr/bin/mkdirhier line 29: mkdir -p $prefix$directory || status=$? ^-----^ SC2086: Double quote to prevent globbing and word splitting. ^--------^ SC2086: Double quote to prevent globbing and word splitting. Did you mean: mkdir -p "$prefix""$directory" || status=$? For more information: https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...