Revisión de Debian MOTD generator

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1	+	```
2	+	#!/bin/bash
3	+	# /etc/update-motd.d/99-mymotd-generator
4	+	# OR
5	+	# /etc/profile.d/sysinfo.sh
6	+	#
7	+
8	+	# Text Color Variables http://misc.flogisoft.com/bash/tip_colors_and_formatting
9	+	tcLtG="\033[00;37m" # LIGHT GRAY
10	+	tcDkG="\033[01;30m" # DARK GRAY
11	+	tcLtR="\033[01;31m" # LIGHT RED
12	+	tcLtGRN="\033[01;32m" # LIGHT GREEN
13	+	tcLtBL="\033[01;34m" # LIGHT BLUE
14	+	tcLtP="\033[01;35m" # LIGHT PURPLE
15	+	tcLtC="\033[01;36m" # LIGHT CYAN
16	+	tcW="\033[01;37m" # WHITE
17	+	tcRESET="\033[0m"
18	+	tcORANGE="\033[38;5;209m"
19	+
20	+	# Time of day
21	+	HOUR=$(date +"%H")
22	+	if [ $HOUR -lt 12 -a $HOUR -ge 0 ]; then TIME="morning"
23	+	elif [ $HOUR -lt 17 -a $HOUR -ge 12 ]; then TIME="afternoon"
24	+	else TIME="evening"
25	+	fi
26	+
27	+	# System uptime
28	+	uptime=`cat /proc/uptime \| cut -f1 -d.`
29	+	upDays=$((uptime/60/60/24))
30	+	upHours=$((uptime/60/60%24))
31	+	upMins=$((uptime/60%60))
32	+
33	+	# System + Memory
34	+	MEMORY_USED=`free -b \| grep Mem \| awk '{print $3/$2 * 100.0}'`
35	+	SWAP_USED=`free -b \| grep Swap \| awk '{print $3/$2 * 100.0}'`
36	+	NUM_PROCS=`ps aux \| wc -l`
37	+
38	+	# IP первого сетевого интерфейса
39	+	LOCAL_IP=$(ip -4 addr show \| grep -oP '(?<=inet\s)\d+\.\d+\.\d+\.\d+' \| grep -v '^127\.' \| head -n 1)
40	+
41	+	# Имя сервера
42	+	HOSTNAME=$(hostname)
43	+
44	+	# ОS
45	+	OS=$(grep PRETTY_NAME /etc/os-release \| cut -d= -f2 \| tr -d '"')
46	+
47	+	# Пользователь
48	+	USER_NAME=$(whoami)
49	+	[ "$USER_NAME" = "root" ] && USER_NAME="${tcLtR}${USER_NAME}${tcRESET}"
50	+
51	+	# Load average
52	+	LOADAVG=$(awk '{print $1" "$2" "$3}' /proc/loadavg)
53	+	SYS_LOADS=`cat /proc/loadavg \| awk '{print $1}'`
54	+
55	+	# RAM: всего и свободно (в мегабайтах)
56	+	RAM_TOTAL=$(free -m \| awk '/Mem:/ {print $2}')
57	+	RAM_FREE=$(free -m \| awk '/Mem:/ {print $7}')
58	+	RAM_FREE_PCT=$(( RAM_FREE * 100 / RAM_TOTAL ))
59	+
60	+	# Количество CPU
61	+	CPU_COUNT=$(nproc)
62	+
63	+	# Uptime
64	+	UPTIME=$(uptime -p)
65	+
66	+	# HDD: для корневого раздела /
67	+	DISK_TOTAL_HUMAN=$(df -h / \| awk 'NR==2 {print $2}')
68	+	DISK_FREE_HUMAN=$(df -h / \| awk 'NR==2 {print $4}')
69	+
70	+	# Используем df без форматирования для процентов
71	+	DISK_TOTAL=$(df -k / \| awk 'NR==2 {print $2}')
72	+	DISK_FREE=$(df -k / \| awk 'NR==2 {print $4}')
73	+	DISK_FREE_PCT=$(( DISK_FREE * 100 / DISK_TOTAL ))
74	+
75	+	echo -e "$tcDkG ==============================================================="
76	+	echo -e $tcLtG " Good $TIME! $tcORANGE $LOCAL_IP"
77	+	echo -e $tcDkG "==============================================================="
78	+	echo -e $tcLtG " - Hostname :$tcW ${$HOSTNAME}"
79	+	echo -e $tcLtG " - IP Address :$tcW ${LOCAL_IP:-N/A}"
80	+	echo -e $tcLtG " - User :$tcW ${USER_NAME}"
81	+	echo -e $tcLtG "==============================================================="
82	+	echo -e $tcLtG " - OS Release :$tcW $(lsb_release -s -d)"
83	+	echo -e $tcLtG " - Kernel : `uname -a \| awk '{print $1" "$3" "$12}'`"
84	+	echo -e $tcLtG " - Users : Currently `users \| wc -w` user(s) logged on"
85	+	echo -e $tcLtG "==============================================================="
86	+	echo -e $tcLtG " - Server Time : `date`"
87	+	echo -e $tcLtG " - System load : ${SYS_LOADS} / ${NUM_PROCS} processes running"
88	+	echo -e $tcLtG " - Load average : ${LOADAVG}"
89	+	echo -e $tcLtG " - System uptime : ${upDays} days ${upHours} hours ${upMins} minutes"
90	+	echo -e $tcLtG "==============================================================="
91	+	echo -e $tcLtG " - CPU : ${CPU_COUNT} CPU"
92	+	echo -e $tcLtG " - RAM : ${RAM_TOTAL} MB, ${RAM_FREE} MB (${RAM_FREE_PCT}%) free"
93	+	echo -e $tcLtG " - HDD : ${DISK_TOTAL_HUMAN}, ${DISK_FREE_HUMAN} (${DISK_FREE_PCT}%) free"
94	+	echo -e $tcLtG " - Swap used % : ${SWAP_USED}"
95	+	echo -e $tcDkG "==============================================================="
96	+	echo -e $tcRESET ""
97	+
98	+	```

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