Example 4-6 insn.tree_3.bash

if [ ! -d INSN_DATA ]; then

mkdir INSN_DATA

fi

cd INSN_DATA

# text is missing. this part is the same as iiees.tree_2.bash

do

echo $station

if [ ! -d $station ]; then

mkdir $station

fi

cd $station

for year in `seq $year_start $year_end`

do

if [ ! -d $year ]; then

mkdir $year

fi

cd $year

for month in 01 02 03 04 05 06 07 08 09 10 11 12

do

if [ ! -d $month ]; then

mkdir $month

fi

done

cd ..

done

cd ..

done

cd ..