MAINT: corrected bash usage
MAINT: corrected bash usage

SamStudio8/scikit-bio,jairideout/scikit-bio,anderspitman/scikit-bio,gregcaporaso/scikit-bio,jdrudolph/scikit-bio,kdmurray91/scikit-bio,xguse/scikit-bio,xguse/scikit-bio,kdmurray91/scikit-bio,gregcaporaso/scikit-bio,corburn/scikit-bio,jairideout/scikit-bio,anderspitman/scikit-bio,colinbrislawn/scikit-bio,colinbrislawn/scikit-bio,jdrudolph/scikit-bio,SamStudio8/scikit-bio,corburn/scikit-bio