# convert to KB, allowing 5% overhead
kbneeded=$(( bytesneeded / 1024 + bytesneeded / 20480 ))
kbavailable=$(df -P -k $TARGET | sed -n "s|^$boot[[:space:]]\+[0-9]\+[[:space:]]\+[0-9]\+[[:space:]]\+\([0-9]\+\).*$|\1|p")
# convert to KB, allowing 5% overhead
kbneeded=$(( bytesneeded / 1024 + bytesneeded / 20480 ))
kbavailable=$(df -P -k $TARGET | sed -n "s|^$boot[[:space:]]\+[0-9]\+[[:space:]]\+[0-9]\+[[:space:]]\+\([0-9]\+\).*$|\1|p")