Bash Script 유용한 Tip파라매터 설정출처 : http://wiki.bash-hackers.org/syntax/peLooking for a specific syntax you saw, without knowing the name?Simple usage$PARAMETER${PARAMETER}Indirection${!PARAMETER}Case modification${PARAMETER^}${PARAMETER^^}${PARAMETER,}${PARAMETER,,}${PARAMETER~}${PARAMETER~~}Variable name expansion${!PREFIX*}${!PREFIX@}Substring removal (also for filename manipulation!)${PARAMETER#P..