1# these didn't work in versions of bash before bash-4.0 2 3LNAME=nordholz 4 5echo ${LNAME[$(( 0 ))]//h/!} 6echo ${LNAME[$(( 2 ))]//h/!} 7 8echo ${LNAME[$(( 0 ))]##??} 9echo ${LNAME[$(( 2 ))]##??} 10 11echo ${LNAME[$(( 0 ))]:2} 12echo ${LNAME[$(( 0 ))]:2:4} 13echo ${LNAME[$(( 2 ))]:2} 14echo ${LNAME[$(( 2 ))]:2:4} 15