I have found a script to create user accounts. But there are a few lines i dont understand. Can someone help me with this? Here's the code:
######################################
while [ $TOTAL -gt 0 ];
do
ACCT=${USER_ACCT}${START}
START=`expr $START + 1`
START=`echo ${START} | awk '{printf("%02d",$1)}'`
TOTAL=`expr $TOTAL - 1`
useradd -g ${GROUP_ID} -d ${TOP_LEVEL_DIR}/${ACCT} -c 'Student Acct' -m -s /bin/ksh ${ACCT}
(cd ${TOP_LEVEL_DIR}/coursefiles; tar cf - . | (cd ${TOP_LEVEL_DIR}/${ACCT}; tar xf -))
chown -R ${ACCT} ${TOP_LEVEL_DIR}/${ACCT}
chgrp -R ${GROUP_ID} ${TOP_LEVEL_DIR}/${ACCT}
chmod 755 ${TOP_LEVEL_DIR}/${ACCT}
echo "Account ${ACCT} created."
echo
done
ACCT=${USER_ACCT}${START_SAV}
echo "Enter the default password to use for the recently created accounts"
echo
passwd ${ACCT}
PASSWORD=`grep '^'${ACCT}':' /etc/shadow |cut -d: -f2`
START=`expr $START_SAV + 1`
START=`echo ${START} | awk '{printf("%02d",$1)}'`
TOTAL=`expr $TOTAL_SAV - 1`
while [ $TOTAL -gt 0 ];
do
ACCT=${USER_ACCT}${START}
ed /etc/shadow <<EOF
g/${ACCT}:/s/:\*LK\*:/:${PASSWORD}:
W
Q
EOF
START=`expr $START + 1`
START=`echo ${START} | awk '{printf("%02d",$1)}'`
TOTAL=`expr $TOTAL - 1`
done
######################################
Thanks!!!