add debian files
add comment
remove unnecessary copy
add missing "do"
add comment for upgrade
add help usage
remove unnecessary union mount
add necessary ``
check linux kernel or kFreeBSD (*BSD)
add comment
add function (psuedo)
fix function
doesn't support non-Linux
fix exec for proper if statement
set basecow and basetgz
remove duplication
add descriptions
add installation function (not yet work...)
add rules
add compat = 9