Shell Programming and Scripting

  #Input of new users
echo "Please enter new username"
echo "User 1..."
read newUser1
echo "User 2..."
read newUser2
echo "User 3..."
read newUser3
echo "User 4..."
read newUser4
echo "User 5..."
read newUser5

#Input of new groups
echo "Please enter name of group one"
read group1
echo "Please enter name of group two"
read group2


#creates 2 groups
sudo groupadd $group1
sudo groupadd $group2

#creates first 3 users and adds them to group 1
echo "Assigning users: $newUser1, $newUser2, $newUser3, to group $group1"
sudo useradd -m -s /bin/bash -G $group1 $newUser1
sudo useradd -m -s /bin/bash -G $group1 $newUser2
sudo useradd -m -s /bin/bash -G $group1 $newUser3

#creates last 2 users and adds them to group 2
echo "Assigning users: $newUser4, $newUser5, to group $group2"
sudo useradd -m -s /bin/bash -G $group2 $newUser4
sudo useradd -m -s /bin/bash -G $group2 $newUser5

#creates an extra two groups for BANNED and WRITE-able users
sudo groupadd banned
sudo groupadd writeable

#applies group privileges
sudo chgrp $group1 *.dat
sudo chmod 774 *.dat
sudo chgrp $group2 config*
sudo chmod 774 config*
sudo usermod -G banned $newUser2
sudo usermod -G banned $newUser4
sudo chgrp banned *.log
sudo chmod 704 *.log
sudo usermod -G writeable $newUser3
sudo usermod -G writeable $newUser5 #hm, how can I add the group writeable to *.log, when group banned is already assigned? And how can I give them special permissions?



#applies user privileges
chown $newUser1 *.txt
chmod 771 *.txt

 chmod xx2

chown root file
chgrp banned file
chmod g=- o+w file