本文共 4786 字，大约阅读时间需要 15 分钟。
该脚本非原创，仅发出来做学习参考交流。
一个删除用户的脚本，思路清晰，构思慎密，考虑方方面面，是学习shell脚本方面的好例子。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | 1 #!/bin/bash 2 3 function get_answer { 4 unset ANSWER 5 ASK_COUNT=0 6 while [ -z "$ANSWER" ] 7 do 8 ASK_COUNT=$[ $ASK_COUNT + 1 ] 9 case $ASK_COUNT in 10 2) 11 echo 12 echo "Please answer the question." 13 echo 14 ;; 15 3) 16 echo 17 echo "One last try ... please answer the question." 18 echo 19 ;; 20 4) 21 echo 22 echo "Since you refuse to answer the question..." 23 echo "exiting program." 24 echo 25 # 26 exit 27 ;; 28 esac 29 30 echo 31 32 if [ -n "$LINE2" ] 33 then 34 echo $LINE1 35 echo -e $LINE2 " \c" 36 else 37 echo -e $LINE1 " \c" 38 fi 39 40 read -t 60 ANSWER 41 done 42 unset LINE1 43 unset LINE2 44 } 45 46 function process_answer { 47 case $ANSWER in 48 y|Y| yes |Yes|yEs|yeS|YEs|YES) 49 ;; 50 *) 51 echo 52 echo $EXIT_LINE1 53 echo #EXIT_LINE2 54 echo 55 exit 56 ;; 57 esac 58 unset EXIT_LINE1 59 unset EXIT_LINE2 60 } 61 62 63 echo "Step #1 - Determine User Account name to Delete " 64 echo 65 LINE1= "Please enter the username of the user" 66 LINE2= "account you wish to delete from system:" 67 get_answer 68 USER_ACCOUNT=$ANSWER 69 70 LINE1= "IS $USER_ACCOUNT the user account" 71 LINE2= "you wish to delete from the system?[y|n]" 72 get_answer 73 74 EXIT_LINE1= "Because the account,$USER_ACCOUNT,is not" 75 EXIT_LINE2= "the one you wish to delete,we are leaving the script..." 76 process_answer 77 78 USER_ACCOUNT_RECORD=$( cat /etc/passwd | grep -w $USER_ACCOUNT) 79 if [ $? - eq 1 ] 80 then 81 echo 82 echo "Account,$USER_ACCOUNT,not found." 83 echo "Leaving the script..." 84 echo 85 exit 86 fi 87 88 echo 89 echo "I found this record:" 90 echo $USER_ACCOUNT_RECORD 91 echo 92 93 LINE1= "Is this the correct User Account? [y|n]" 94 get_answer 95 96 EXIT_LINE1= "Because the account,$USER_ACCOUNT,is not" 97 EXIT_LINE2= "the one you wish to delete,we are leaving the script..." 98 process_answer 99 100 echo 101 echo "Step #2 - Find process on system belonging to user Account" 102 echo 103 echo "$USER_ACCOUNT has the following processes running:" 104 echo 105 106 ps -u $USER_ACCOUNT 107 108 case $? in 109 1) 110 echo "There are no processes for this account currently running." 111 echo 112 ;; 113 0) 114 unset ANSWER 115 LINE1= "Would you like me to kill the process(es)?[y|n]" 116 get_answer 117 118 case $ANSWER in 119 y|Y| yes |Yes|yEs|yeS|YEs|YES) 120 echo 121 trap "rm $USER_ACCOUNT_Running_Process.rpt" SIGTERM SIGINT SIGQUIT 122 ps -u $USER_ACCOUNT > $USER_ACCOUNT_Running_Process.rpt 123 exec < $USER_ACCOUNT_Running_Process.rpt 124 read USER_PROCESS_REC 125 read USER_PROCESS_REC 126 while [ $? - eq 0 ] 127 do 128 USER_PID=$( echo $USER_PROCESS_REC | cut -d " " -f1) 129 kill -9 $USER_PID 130 echo "Killed process $USER_PID" 131 read USER_PROCESS_REC 132 done 133 134 echo 135 rm $USER_ACCOUNT_Running_Process.rpt 136 ;; 137 *) 138 echo 139 echo "Will not kill the process(es)" 140 echo 141 ;; 142 esac 143 ;; 144 esac 145 146 147 echo 148 echo "Step #3 - Find files on system belonging to user account" 149 echo 150 echo "Creating a report of all files owned by $USER_ACCOUNT." 151 echo 152 echo "It is recommended that you backup/archive these files." 153 echo "and then do one of two things:" 154 echo " 1) Delete the files" 155 echo " 2) Change the files' ownership to a current user account." 156 echo 157 echo "Please wait. This may take a while..." 158 159 160 REPORT_DATE=` date +%y%m%d` 161 REPORT_FILE=$USER_ACCOUNT "_Files_" $REPORT_DATE.rpt 162 163 find / -user $USER_ACCOUNT > $REPORT_FILE 2> /dev/null 164 165 echo 166 echo "Report is complete." 167 echo "Name of report: $REPORT_FILE" 168 echo "Location of report: `pwd`" 169 echo 170 171 echo 172 echo "Step #4 - Remove user account" 173 echo 174 175 LINE1= "Do you wish to remove $User_Account's account from system?[y|n]" 176 get_answer 177 178 179 EXIT_LINE1= "Since you do not wish to remove the user account." 180 EXIT_LINE2= "$USER_ACCOUNT at this time.exiting the script..." 181 process_answer 182 183 userdel $USER_ACCOUNT 184 echo 185 echo "User account,$USER_ACCOUNT,has been removed." 186 echo |