mirror of https://github.com/fengyuhetao/shell.git
248 lines
5.5 KiB
Bash
248 lines
5.5 KiB
Bash
#!/bin/bash
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#
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# Delete_User - Automates the 4 steps to remove an account
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#
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#################################################################
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#
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# Define Functions
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#
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#################################################################
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function get_answer {
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#
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unset ANSWER
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ASK_COUNT=0
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#
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while [ -z "$ANSWER" ] # while no answer is given, keep asking
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do
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ASK_COUNT=$[ $ASK_COUNT + 1 ]
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#
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case $ASK_COUNT in # If user gives no answer in time allowed
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2)
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echo
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echo "Please answer the question."
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echo
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;;
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3)
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echo
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echo "One last try... please answer the question."
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echo
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;;
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4)
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echo
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echo "Since you refuse to answer the question..."
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echo "exiting program."
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echo
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#
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exit
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;;
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esac
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#
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echo
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#
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if [ -n "$LINE2" ]
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then
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echo $LINE1 # Print 2 lines
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echo -e $LINE2" \c"
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else # Print 1 line
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echo -e $LINE1" \c"
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fi
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#
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# Allow 60 seconds to answer before time-out
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read -t 60 ANSWER
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done
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#
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# Do a little variable clean-up
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#
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unset LINE1
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unset LINE2
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#
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} #end of get_answer function
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#
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#################################################################
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function process_answer {
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#
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case $ANSWER in
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y|Y|YES|yes|yEs|yeS|YEs|yES)
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# If user answers "yes".do nothing.
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;;
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*)
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# If user answers anything but "yes", exit script
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echo
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echo $EXIT_LINE1
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echo $EXIT_LINE2
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echo
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exit
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;;
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esac
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#
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# Do a little variable clean-up
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unset EXIT_LINE1
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unset EXIT_LINE2
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#
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} #End of process_answer function
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#
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################################################################
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#
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# End of Function Definitions
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#
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############### Main Script #################################
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#
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# Get name of User Account to check
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#
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echo "Step #1 - Determine User Account name to delete "
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echo
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LINE1="Please enter the username of the user"
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LINE2="account you wish to delete from system:"
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get_answer
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USER_ACCOUNT=$ANSWER
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#
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# Double check with script user that this is the correct User Account
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#
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LINE1="Is $USER_ACCOUNT the user account"
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LINE2="you wish to delete from the system?[ y/n ]:"
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get_answer
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#
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############################################################
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#
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# Check that USER_ACCOUNT is really an account on the system
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#
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USER_ACCOUNT_RECORD=$(cat /etc/passwd | grep -w $USER_ACCOUNT)
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#
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if [ $? -eq 1 ] # If the account is not found, exit script
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then
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echo
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echo "Account, $USER_ACCOUNT, not found."
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echo "Leaving the script..."
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echo
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exit
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fi
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#
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echo
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echo "I found this record:"
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echo $USER_ACCOUNT_RECORD
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echo
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#
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LINE1="Is this the correct User Account?[y/n]:"
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get_answer
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#
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#
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# Call process_answer function:
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# if user answers anything but "yes", exit script
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#
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EXIT_LINE1="Because the account, $USER_ACCOUNT, is not "
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EXIT_LINE2="the one you wish to delete, we are leaving the script..."
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process_anser
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#
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##############################################################
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#
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# Search for any running processes that belong to the User Account
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#
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echo
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echo "Step #2 - Find process on system belonging to user account"
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echo
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echo "$USER_ACCOUNT has the following processes running: "
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echo
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#
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ps -u $USER_ACCOUNT #List the processes running
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#
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case $? in
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1) # No processes running for this User Account
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#
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echo "There are no processes for this account currently running."
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echo
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;;
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0) # Processes running for this User Account.
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# Ask Script User if wants us to kill the processes.
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#
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unset ANSWER # I think this line is not needed
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LINE1="Would you like me to kill the process(es)? [y/n]:"
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get_answer
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#
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case $ANSWER in
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y|Y|YES|yes|Yes|yEs|yeS|YEs|yES) # if user answer "yes",
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#kill User Account processes
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#
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echo
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#
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# Clean-up temp file upon signals
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#
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trap "rm $USER_ACCOUNT_Running_Process.rpt" SIGTERM SIGINT SIGQUIT
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#
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# List user processes running
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ps -u $USER_ACCOUNT > $USER_ACCOUNT_Running_Process.rpt
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#
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exec < $USER_ACCOUNT_Running_Process.rpt # Make report Std Input
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#
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read USER_PROCESS_REC # First record will be blank
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read USER_PROCESS_REC
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#
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while [ $? -eq 0 ]
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do
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# obtain PID
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USER_PID=$(echo $USER_PROCESS_REC | cut -d " " -f1 )
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kill -9 $USER_PID
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echo "Killed process $USER_PID"
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read USER_PROCESS_REC
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done
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#
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echo
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#
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rm $USER_ACCOUNT_Running_Process.rpt # Remove temp report
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;;
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*) # If user answers anything but "yes", do not kill.
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echo
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echo "Will not kill the process(es)."
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echo
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;;
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esac
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;;
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esac
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###################################################################################
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#
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# Create a report of all files owned by User Account
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#
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echo
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echo "Step #3 - Find files on system belonging to user account"
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echo
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echo "Creating a report of all files owned by $USER_ACCOUNT."
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echo
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echo "It is recommended that you backup/archive these files."
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echo "and then do one of two things:"
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echo " 1) Delete the files"
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echo " 2) Change the files' ownership to a current user account."
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echo
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echo "Please wait. This may take a while..."
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#
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REPORT_DATE=`date +%y%m%d`
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REPORT_FILE=$USER_ACCOUNT"_Files_"$REPORT_DATE".rpt"
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#
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find / -user $USER_ACCOUNT > $REPORT_FILE 2>/dev/null
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#
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echo
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echo "Report is complete."
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echo "Name of report: $REPORT_FILE"
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echo "Location of report: `pwd`"
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echo
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################################################################
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#
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# Remove User Account
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echo
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echo "Step #4 - Remove user account"
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echo
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#
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LINE1="Do you wish to remove $USER_ACCOUNT's account from system? [y/n]:"
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get_answer
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#
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# Cass process_answer function:
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# if user answers anything but "yes", exit script
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#
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EXIT_LINE1="Since you do not wish to remove the user account."
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EXIT_LINE2="$USER_ACCOUNT at this time, exiting the script..."
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process_answer
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#
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userdel $USER_ACCOUNT # delete user account
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echo
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echo "User account, $USER_ACCOUNT, has been removed"
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echo
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#
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