Helper scripts for managing student user accounts in a Linux environment. Teacher accounts are manually created, and can be setup in sudoers to have access to student accounts.

make-user-accounts.sh

#!/bin/bash

PREFIX=$1
COUNT=$2
PASS=$3

# validation
if [ $# -ne 3 ]; then
   echo "Usage: $0 <prefix> <count> <password>"
   exit
fi

# hash password
PASS=$(openssl passwd -1 $PASS)

# create
for i in $(seq 1 $COUNT)
do
   # setup student account, zero padded to two characters
   # with a password
   S=$(printf "${PREFIX}%02d" $i)
   D=/home/$S
   useradd -m -p $PASS -s /bin/bash $S

   if [ $? -eq 0 ]; then
      # remove group/other read/execute access
      chmod 700 $D

      # fix .bashrc for default PuTTY character set
      echo -e "\nexport LANG=en_US.iso88591" >> $D/.bashrc

      # fix wall/talk to prevent annoying students
      echo -e "\nmesg n" >> $D/.bashrc

      echo "Created $S"
   else
      echo "Could not create $S"
   fi

done

remove-user-accounts.sh

#!/bin/bash

PREFIX=$1
COUNT=$2

# validation
if [ $# -ne 2 ]; then
   echo "Usage: $0 <prefix> <count>"
   exit
fi

# remove
for i in $(seq 1 $COUNT)
do
   # setup student account, zero padded to two characters
   # with a password
   export S=$(printf "${PREFIX}%02d" $i)
   userdel -r $S

   if [ $? -eq 0 ]; then
      echo "Removed $S"
   else
      echo "Could not remove $S"
   fi
done