#! /bin/sh -record_file=passwdadd_file=adddelete_file=deleteclearecho "              用戶信息增加情況"echo "==========================================  "   echo "輸入用戶的具體情況"    while true						#用戶名 echo "username:"             read user_name;do        if (test  -z "$user_name") #-z 長度為0成真|判空方法2 "$user_name" = " "                then               echo "你還沒有輸入用戶名"   continue          elif         echo $user_name>temp          grep -qv "[a-zA-Z0-9]" temp            then             echo "輸入的是無效的用戶名 "        rm -f temp        elsecase $user_name in[a-zA-Z]*) if (awk -F: '{print $1}' $record_file|grep -wq $user_name)thenecho "該用戶已經存在"continue         echo " "elsebreak fi;;*)echo "用戶名只能是字母或者下劃線開頭"     ;;esacfi  donewhile true                                     #密碼dostty -echo		#輸入不可見				   echo "password:"   read passwd1 if (test -z $passwd1)	     #輸入不可見方法2 read -ersthen  echo "還未輸入密碼,再來一次 "continueelif    (test `expr length $passwd1` -lt 6  ) #-lt 小等于 then echo "密碼長度不足6位,請重新輸入"continuefi#elif#(        echo $passwd1>temp #         grep -qv "[a-zA-Z]" temp||grep -qv "[0-9]"#)#then#echo "弱密碼,為了您的密碼安全是否重新輸入?(Y或N)"#read ans#case "$ans" in#y)continue;;#Y)continue;;#n)break;;#N)break;;#*)echo "請輸入Y或N"#continue;;#esacif(echo $passwd1|grep -q "^[a-zA-Z]*$") || (echo $passwd1|grep -q "^[0-9]*$")thenecho "輸入的是弱密碼"echo "是否要重新輸入?(Y或N)"read ycase $y iny|Y)continue;;n|N)echo "";;*)echo "輸入錯誤重新輸入"continueesacfi  echo "password again:" read passwd2 if (test -z $passwd2)    then       echo "還未輸入,重新來一次 "     continue elif    (test $passwd1 != $passwd2)     then       echo "兩次輸入不相同,請重新輸入 "continue else stty echo     #撤銷輸入不可見    break fidonewhile true					#用戶IDdo   echo "user ID:" read uidif (test -z $uid)thenecho  " 沒有鍵入ID,請再次輸入"continueelif(         echo $uid>temp         grep -q "[^0-9]" temp)then     echo "無效ID"elif(  test "$uid" -lt "500")		#判空方法2 "$uid" = " "then    echo "用戶ID需要大于500,請再次輸入" continueelse breakfidonewhile true					#組IDdo echo "group ID:" read gidif(test -z $gid)thenecho  " 沒有鍵入ID,請再次輸入"                                                                                continueelif (         echo $gid>temp         grep -q "[^0-9]" temp)thenrm -f tempecho  " 無效ID"else                                                                                breakfidonewhile true                                              #用戶全名                                                                                 echo "user fullname:"read full_name                                                                                do           if (test  -z "$full_name")                then               echo "你還沒有輸入用戶全名"   continue          elif         echo $full_name>temp         grep -qv "[a-zA-Z0-9]" temp                                                                                            then           rm -f /root/07zsb-02-28/temp             echo "輸入的是無效的用戶全名 "                                                                                        elsebreak fi       done #  echo "user todd:"					#主目錄   #  read user_todd  while truedo echo "user shell:" read user_shell   if (test -z $user_shell)     then         echo "沒有輸入!請再次輸入"      continue   elif       case $user_shell in         bash)break;;         csh)break;;         kash)break;;         sh)break;;       esac   then       echo  "輸入的shell名不在本系統范圍內! "    else       break    fidoneclearecho "              用戶信息增加情況"echo "==========================================  "   echo " 		   user name  :  $user_name "echo "	   	   user ID  :  $uid "echo "		   group ID  :  $gid "echo "		   full name  :  $full_name "echo "		   shell  :  $user_shell"while true				#保存用戶信息do echo " "  echo "增加這個用戶嗎?(Y or N)" read answer1if (test -z $answer1)then echo "還未輸入,請輸入Y或N "else case $answer1 in y)echo "$user_name: :$uid:$gid:$full_name: :$user_shell ">> $record_filebreak;; Y)echo "$user_name: :$uid:$gid:$full_name: :$user_shell ">> $record_filebreak;; n)break;; N)break;; *)echo "請重新輸入Y或N"   continue;; esacfidonewhile true					#詢問是否增加新用戶doecho "還要繼續添加新用戶嗎?(Y or N)"read answer2if (test -z $answer2)then echo "還未輸入,請輸入Y或N "else case $answer2 in y) clear   sh $add_file;; Y)clear   sh $add_file;; n)sh menu;; N)sh menu;; *)echo "請重新輸入Y或N"   continue;; esacfidone