Initial part of script used to copy /bin/bash, /bin/ls, /bin/rpm, along with their libs to JAIL.

copy2tmpfs.sh

#!/usr/bin/env bash 
# Setup JAIL location
J=${JAIL:-/var/chroot/jaildir}
# For continuity define JAIL var.
JAIL=$J

mkdir -p $J/{bin,lib64,lib}
ls $J
cp -afv /bin/{bash,ls,rpm} $J/bin

list0="$(ldd /bin/bash | egrep -o '/lib.*\.[0-9]')"
for i in $list0; do cp  -afv "$i" "${J}${i}"; done

list1="$(ldd /bin/ls | egrep -o '/lib.*\.[0-9]')"
for i in $list1; do cp  -afv "$i" "${J}${i}"; done

list2="$(ldd /bin/rpm | egrep -o '/lib.*\.[0-9]')"
for i in $list2; do cp  -afv "$i" "${J}${i}"; done