4.User.sh

#!/bin/bash
Time=`date +"%Y-%m-%d__%H:%M:%S"`

eval `awk -F: -v sum=0 '{if ($3>=1000&&$3!=65534){sum+=1;printf("All["sum"]=%s;",$1)}} END {printf("UserSum=%d\n", sum)}' /etc/passwd`

MostActiveUser=`last -w | cut -d " " -f 1 | grep -v wtmp | grep -v reboot | grep -v "^$" | sort | uniq -c | sort -k 1 -n -r | awk -v num=3 '{if(num > 0)printf(" %s", $2); num --}' | cut -c 2-`

eval `awk -F: '{if($3==1000)printf("User_1000=%s", $1)}' /etc/passwd`

Users=`cat /etc/group | grep sud | cut -d : -f 4 | tr ',' ' '`
UserWithRoot=${User_1000}
for i in ${Users};do
    if [[ $i == ${User_1000} ]]; then
        continue
    fi
    UserWithRoot="{UserWithRoot},$i"
done

if [[ -r /etc/sudoers ]];then
    for i in ${All[*]};do
        grep -q -w "^${i}" /etc/sudoers 
        if [[ $? -eq 0 ]];then
            UserWithRoot="${UserWithRoot}, $i"
        fi
    done
fi

UserLogedIn=`w -h | awk '{printf(",%s_%s_%s", $1, $3, $2)}' | cut -c 2-`

echo "$Time $UserSum [$MostActiveUser] [${UserWithRoot}] [${UserLogedIn}]"