Source: <<Linux 命令行与shell脚本编程大全(第二版)
脚本比较长,核查了两遍发现还是报错
root@ubuntu:/home/winnie# sh ./Delete_User
./Delete_User: line 9: syntax error near unexpected token `unset'
脚本如下
#!/bin/bash
#
#Delete_User-Automates the 4 steps to remove an account
############
#Define Functions
############
function get_answer{
#
unset ANSWER
ASK_COUNT=0
#
while [ -z "$ANSWER" ] #while no answer is given, keep asking.
do
ASK_COUNT=$[ $ASK_COUNT + 1 ]
#
case $ASK_COUNT in #If user gives no answer in time alloted
2)
echo
echo "Please answer the question."
echo
;;
3)
echo
echo "One last try...please answer the question."
echo
;;
4)
echo
echo “Since you refuse to answer the question..."
echo "existing program"
echo
#
exit
;;
esac
#
echo
#
if [ -n "$LINE2" ]
then #Print 2 LINES
echo $LINE1
echo -e $LINE2"\c"
else
echo -e $LINE1"\c"
fi
#
# Allow 60 seconds to answer before time-out
read -t 60 ANSWER
done
#Do a little variable clean-up
unset LINE1
unset LINE2
#
} #End of get_answer function
#
################
function process_answer{
#
case $ANSWER in
y|Y|YES|yes|Yes|yES|yEs|yeS|YEs)
# if uswer answers "yes", do nothing.
;;
*)
#If user answers anything but "yes", exit script
echo
echo $EXIT_LINE1
echo $EXIT_LINE2
echo
exit
;;
esac
#
#Do a little variable clean-up
#
unset EXIT_LINE1
unset EXIT_LINE2
#
} #End of process_answer function
#
#################################
#End of Function Definitions
#
##################Main Script#####################
#Get name of Uswer Account t check
#
echo "Step #1 - Determine User Account name to Delete"
echo
LINE1="Please enter the uswername of the user"
LINE2="account you wish to delete from system:"
get_answer
USER_ACCOUNT=$ANSWER
#
#Double check with script user that this is the correct user account
#
LINE1="Is $USER_ACCOUNT the user account"
LINE2="you wish to delete from the system?[y/n]"
get_answer
#
#Call process_answer function:
#if user answers anything but "yes", exit script
#
EXIT_LINE1="Because the acccount, $USER_ACCOUNT is not"
EXIT_LINE2="the one you wishi the delete, we are leaving the script.."
process_answer
#
##############################
#Check that USER_ACCOUNT is really an account on the system
#
USER_ACCOUNT_RECORD=$(cat /etc/passwd | grep -w $USER_ACCOUNT)
if [ $? -eq 1 ] #If the account is not found, exit script
then
echo
echo "Account. $USER_ACCOUNT, not found."
echo "Leaving the script.."
echo
exit
fi
#
echo
echo "I found this record:"
echo $USER_ACCOUNT_RECORD
echo
#
LINE1="Is this correct user account?[y/n]“
get_answer
#
#
#Call process_answer functions"
# if user answers anything bug "yes", exit scrpit
#
EXIT_LINE1="Because the account, $USER_ACCOUNT is not"
EXIT_LINE2="the one you wish to delete, we area leaving the script.."
process_answer
#
###################################
#Search for any running processes that belong to the User account
#
echo
echo "Step #2-Find process on system belonging to user account"
echo
echo "$USER_ACCOUNT has the following processes running:"
echo
#
ps -u $USER_ACCOUNT #List user processes running.
case $? in
1) #No processes running for this user account
#
echo "There are no processes for this account currently running."
echo
;;
0) #Processes running for this user account.
#Ask Script user if wants us to kill the processes.
#
unset ANSWER
LINE1="Would you like me to kill the process(es)? [y/n]"
get_answer
#
case $ANSWER in
y|Y|YES|yes|Yes|yES|yEs|yeS|YEs) #If user answers "yes",kill user account process;
echo
#Clean-up temp file upon signals
trap "rm $USER_ACCOUNT_Running_Process.rpt" SIGTERM SIGINT SIGQUIT
#
#List user processes running
ps -u $USER_ACCOUNT > $USER_ACCOUNT_Running_Process.rpt
#
exec < $USER_ACCOUNT_Running_Process.rpt #Make report Std Input
#
read USER_ACCOUNT_REC #First record will be blank
read USER_ACCOUNT_REC
#
while [ $? -eq 0 ]
do
#Obtain PID
USER_PID=$(echo $USER_PROCESS_REC | cut -d " " -f 1)
kill -9 $USER_PID
echo "Killed process $USER_PID"
read USER_PROCESS_REC
done
#
echo
rm $USER_ACCOUNT_Running_Process.rpt #Remove temp report.
;;
*) #If user answers anything but "yes", do not kill.
echo
echo "Will not kill the process(es)"
echo
;;
esac
;;
esac
###################################################3
#Create a report of all files owned by user account
#
echo
echo "Step #3-Find files on system belonging to user account"
echo
echo "Creating a reort of all files owned by $USER_ACCOUNT."
echo
echo "It is recommended that you backup/archive these files."
echo "and then do one of two things."
echo "1)Delete the files"
echo "2)Change the files' ownership to a current user account."
echo
echo "Please wait. This may take a while..."
#
REPORT_DATE='date +%y%m%d'
REPORT_FILE=$USER_ACCOUNT"_Files_"$REPORT_DATE".rpt"
#
find / -user $USER_ACCOUNT > $REPORT_FILE 2>/dev/null
#
echo
echo "Report is complete."
echo "Name of the report: $REPORT_FILE"
echo "Location of report: 'pwd'"
echo
###################################3
#Remove user account
echo
echo "Step#4-Remove user account"
echo
#
LINE1="Do you wish to remove $USER_ACCOUNT's account from system?[y/n]"
get_answer
#
#Call process_answer function:
#if user answers anything but "yes", exit script.."
process_answer
#
userdel $USER_ACCOUNT #delete user account
echo
echo "User account, #USER_ACCOUNT has been removed"
echo
.