#!/bin/bash
# assume current directory is ~/886326
# generate directory structure to the end of lab02

# create xx.txt - simple text file
echo 0123456789 >  xx.txt
echo 1234567890 >> xx.txt
echo 2345678901 >> xx.txt
echo 3456789012 >> xx.txt
echo 4567890123 >> xx.txt
echo 5678901234 >> xx.txt
echo 6789012345 >> xx.txt
echo 7890123456 >> xx.txt
echo 8901234567 >> xx.txt
echo 9012345678 >> xx.txt

# copy to 3 other files
cp xx.txt xy.txt
cp xx.txt xz.txt
cp xx.txt yy.txt

# create two diectories, H and K
mkdir H K

# create 5 subdirectories under H which are A, B, C, D and E
mkdir ./H/A ./H/B ./H/C ./H/D ./H/E

# create 2 subdirectories under K which are F and G
mkdir ./K/F ./K/G

# 1. copy xx.txt to A, C, D, F and H
cp xx.txt ./H/A
cp xx.txt ./H/C
cp xx.txt ./H/D
cp xx.txt ./K/F
cp xx.txt ./H


# 2. copy yy.txt to B, C, E, G and K
cp yy.txt ./H/B
cp yy.txt ./H/C
cp yy.txt ./H/E
cp yy.txt ./K/G
cp yy.txt ./K

# 3. access permission for files in H and K are (rw- rw- r--) or 664
chmod 664 ./H/xx.txt ./K/yy.txt

# 4. access permission for files in A, B, C, D and E are (rw- r-- ---) or 640
chmod 640 ./H/A/xx.txt ./H/B/yy.txt ./H/C/*.txt ./H/D/xx.txt ./H/E/yy.txt

# 5. access permission for files in F and G are (r-- --- ---) or 400
chmod 400 ./K/F/xx.txt ./K/G/yy.txt