BASH — Login Screen

Перед использованием данного скрипта необходимо убедиться, что пакет "figlet" установлен

Вот так при логине будет выглядеть MOTD:

Содержимое скрипта:

#!/bin/bash

# ENV
GREEN=$(tput setaf 2)
BLUE="$(tput setaf 4)"
YELLOW="$(tput setaf 4)"
PURPLE="$(tput setaf 5)"
WHITE=$(tput sgr 0)

# System load
SPACE_ROOT=`df -Ph | grep -e '/$' | awk '{print $4}' | tr -d '\n'`
SPACE_HOME=`df -Ph | grep "/home/" | awk '{print $4}' | tr -d '\n'`
RAM_1=`free -t -m | grep "Всего" | awk '{print $3" MB";}'`
RAM_2=`free -t -m | grep "Память" | awk '{print $2" MB";}'`
LA_1=`cat /proc/loadavg | awk {'print $1'}`
LA_5=`cat /proc/loadavg | awk {'print $2'}`
LA_15=`cat /proc/loadavg | awk {'print $3'}`

clear
tput setaf 3
figlet $(hostname)
tput sgr 0

echo -e "
=====================================================================
                             $PURPLE INFO $WHITE
 -$BLUE Hostname$(tput sgr 0)........................: $(tput setaf 2)$HOSTNAME $WHITE
 -$BLUE Uptime$(tput sgr 0)..........................:$(tput setaf 2)`uptime | cut -d ',' -f1` $WHITE
=====================================================================
                           $PURPLE SOURCES $WHITE
 -$BLUE CPU usage$WHITE.......................: $GREEN$LA_1, $LA_5, $LA_15 (1, 5, 15 min) $WHITE
 -$BLUE Memory used$WHITE.....................: $GREEN$RAM_1 / $RAM_2 $WHITE
 -$BLUE Swap in use$WHITE.....................: $GREEN`free -m | tail -n 1 | awk '{print $3}'` MB $WHITE
 -$BLUE Disk Space$WHITE (/)..................: $GREEN$SPACE_ROOT remaining $WHITE
=====================================================================
"

Для отображения свободного места в других точках монтирования, можно добавить по образу и подобию точки "/"

Применение

Ubuntu:

Достаточно скопировать скрипт в директорию "/etc/update-motd.d/" и разрешить право исполнения.

CentOS:

Нужно отключить в SSHD PrintMotd, для этого открываем файл конфигурации "/etc/ssh/sshd_config", находим:

PrintMotd yes

Меняем на:

PrintMotd no

Перезапускаем службу:

systemctl restart sshd

И копируем скрипт с правами запуска в директорию "/etc/profile.d"

UDP: Расширенный скрипт со статусами сервисов

Содержимое скрипта:

#!/bin/bash

# ENV
RED=$(tput setaf 1)
GREEN=$(tput setaf 2)
BLUE="$(tput setaf 4)"
YELLOW="$(tput setaf 4)"
PURPLE="$(tput setaf 5)"
WHITE=$(tput sgr 0)

# System load
SPACE_ROOT=`df -Ph | grep -e '/$' | awk '{print $4}' | tr -d '\n'`
SPACE_HOME=`df -Ph | grep "/home/" | awk '{print $4}' | tr -d '\n'`
RAM_1=`free -t -m | grep "Total" | awk '{print $3" MB";}'`
RAM_2=`free -t -m | grep "RAM" | awk '{print $2" MB";}'`
LA_1=`cat /proc/loadavg | awk {'print $1'}`
LA_5=`cat /proc/loadavg | awk {'print $2'}`
LA_15=`cat /proc/loadavg | awk {'print $3'}`

# Services
SERVICES="openvpn@server nginx php-fpm mariadb memcached"

clear
tput setaf 3
figlet $(hostname)
tput sgr 0

echo -e "
=====================================================================
                             $PURPLE INFO $WHITE
 -$BLUE Hostname$(tput sgr 0)........................: $(tput setaf 2)$HOSTNAME $WHITE
 -$BLUE Uptime$(tput sgr 0)..........................:$(tput setaf 2)`uptime | cut -d ',' -f1` $WHITE
=====================================================================
                           $PURPLE SOURCES $WHITE
 -$BLUE CPU usage$WHITE.......................: $GREEN$LA_1, $LA_5, $LA_15 (1, 5, 15 min) $WHITE
 -$BLUE Memory used$WHITE.....................: $GREEN$RAM_1 / $RAM_2 $WHITE
 -$BLUE Swap in use$WHITE.....................: $GREEN`free -m | tail -n 1 | awk '{print $3}'` MB $WHITE
 -$BLUE Disk Space$WHITE (/)..................: $GREEN$SPACE_ROOT remaining $WHITE
=====================================================================
                           $PURPLE SERVICES $WHITE"

for i in $SERVICES
do
    if /usr/bin/systemctl status $i | grep -q "Active: active (running)"
    then
        i=$(echo $i | cut -d '@' -f1)
        LENGHT=$(echo $i | wc -c)
        DOT=$[ 23 - $LENGHT ]
        echo -e " -$BLUE Service: $WHITE$i" | tr -s '\r\n' '.'
        for ((n=0;n<$DOT;n++))
        do
            echo '.' | tr -s '\r\n' '.'
        done
        echo -e ":$GREEN RUNNING $WHITE"
    else
        i=$(echo $i | cut -d '@' -f1)
        LENGHT=$(echo $i | wc -c)
        DOT=$[ 23 - $LENGHT ]
        echo -e " -$BLUE Service: $WHITE$i" | tr -s '\r\n' '.'
        for ((n=0;n<$DOT;n++))
        do
            echo '.' | tr -s '\r\n' '.'
        done
        echo -e ":$RED NOT RUNNING $WHITE"
    fi
done

echo "====================================================================="

Метки: Метки BASH MOTD