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motd.sh
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motd.sh
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#!/bin/bash
#########################################################################
# File Name: motd.sh
# Update Time: 2023.04.23
#########################################################################
# Don't change! We want predictable outputs
export LANG="en_US.UTF-8"
#
# Logo
#
logo[1]="
! !
! ! ! !
! . ! ! . !
^^^^^^^^^ ^
^ ^
^ (0) (0) ^
^ "" ^
^ *************** ^
^ * * ^
^ * /\ /\ /\ * ^
^ * * ^
^ * /\ /\ /\ /\ * ^
^ * * ^
^ * * ^
^ * * ^
^ * * ^
^* * ^
^ * * ^
^ * * ^
^ * ) ( * ^
^^^^^^^^ ^^^^^^^^^
一个真诚的人会做他想做的事，不是他必须做的事。
"
logo[2]="
┏┓ ┏┓+ +
┏┛┻━━━┛┻┓ + +
┃ ┃
┃ ━ ┃ ++ + + +
███━███ ┃+
┃ ┃ +
┃ ┻ ┃
┃ ┃ + +
┗━┓ ┏━┛
┃ ┃
┃ ┃ + + + +
┃ ┃
┃ ┃ + 神兽保佑,永不宕机！
┃ ┃
┃ ┃ +
┃ ┗━━━┓ + +
┃ ┣┓
┃ ┏┛
┗┓┓┏━┳┓┏┛ + + + +
┃┫┫ ┃┫┫
┗┻┛ ┗┻┛+ + + +
"
logo[3]="
┏┓ ┏┓
┏┛┻━━━┛┻┓
┃ ┃
┃ ━ ┃
┃ ┳┛ ┗┳┃
┃ ┃
┃ ┻ ┃
┃ ┃
┗━┓ ┏━┛
┃ ┃ 神兽保佑,永不宕机！
┃ ┃
┃ ┗━━━┓
┃ ┣┓
┃ ┏┛
┗┓┓┏━┳┓┏┛
┃┫┫ ┃┫┫
┗┻┛ ┗┻┛
"
logo=${logo[$[$RANDOM % ${#logo[@]} + 1]]}
#
# System
#
system_os=$(grep -w PRETTY_NAME /etc/os-release|awk -F '"' '{printf $2}')
#
# Kernel
#
kernel_version=$(uname -r)
#
# Tcpcc & qdisc
#
tcpcc="$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)"
qdisc="$(sysctl -n net.core.default_qdisc 2>/dev/null)"
#
# Memory
#
# MemUsed = Memtotal + Shmem - MemFree - Buffers - Cached - SReclaimable
# Source: https://github.com/KittyKatt/screenFetch/issues/386#issuecomment-249312716
mem_info=$(</proc/meminfo)
mem_total=$(awk '$1=="MemTotal:" {print $2}' <<< ${mem_info})
mem_used=$((${mem_total} + $(cat /proc/meminfo | awk '$1=="Shmem:" {print $2}')))
mem_used=$((${mem_used} - $(cat /proc/meminfo | awk '$1=="MemFree:" {print $2}')))
mem_used=$((${mem_used} - $(cat /proc/meminfo | awk '$1=="Buffers:" {print $2}')))
mem_used=$((${mem_used} - $(cat /proc/meminfo | awk '$1=="Cached:" {print $2}')))
mem_used=$((${mem_used} - $(cat /proc/meminfo | awk '$1=="SReclaimable:" {print $2}')))
mem_total=$((mem_total / 1024))
mem_used=$((mem_used / 1024))
mem_usage=$((100 * ${mem_used} / ${mem_total}))
#
# Load average
#
load_average=$(awk '{print $1" "$2" "$3}' /proc/loadavg)
#
# Disk
#
disk_used=$(df -h | grep " /$" | cut -f4 | awk '{printf "%s / %s (%s)", $3, $2, $5}')
#
# Time
#
time_cur=$(date "+%F %T %Z %z")
#
# Uptime
#
up_time=$(uptime | awk -F'( |,|:)+' '{d=h=m=0; if ($7=="min") m=$6; else {if ($7~/^day/) {d=$6;h=$8;m=$9} else {h=$6;m=$7}}} {print d+0,"days,",h+0,"hours,",m+0,"minutes"}')
#
# Username
#
user=${USER:-$(id -un)}
hostname=${HOSTNAME:-$(hostname)}
#
# Users
#
user_num=$(who -u | wc -l)
echo -e "\033[0;36;40m$logo\033[0m"
echo -e "操作系统: \t$system_os"
echo -e "内核版本: \t$kernel_version"
echo -e "拥塞控制: \t$tcpcc + $qdisc"
echo -e "系统时间: \t$time_cur"
echo -e "运行时间: \t$up_time"
echo -e "系统负载: \t\033[0;33;40m$load_average\033[0m"
echo -e "内存使用: \t\033[0;31;40m$mem_used\033[0m MiB / \033[0;32;40m$mem_total\033[0m MiB ($mem_usage%)"
echo -e "磁盘使用: \t$disk_used"
echo -e "当前登录: \t$user@$hostname"
echo -e "在线用户: \t${user_num}\n"