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