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92 lines
4 KiB
Bash
92 lines
4 KiB
Bash
#!/bin/bash
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#
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# 10-sysinfo - generate the system information
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# Copyright (c) 2013 Nick Charlton
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#
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# Authors: Nick Charlton <hello@nickcharlton.net>
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# Modified by Oitibs: https://oitibs.com/?s=Debian+Dynamic+MOTD
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# Modified by Leitbogioro: https://github.com/leitbogioro/
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# https://www.zhihu.com/column/originaltechnic
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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date=`date`
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load=`cat /proc/loadavg | awk '{print $1}'`
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root_usage=`df -h / | awk '/\// {print $(NF-1)}'`
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memory_usage=`free -m | awk '/Mem:/ { total=$2; used=$3 } END { printf("%3.1f%%", used/total*100)}'`
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[[ `free -m | awk '/Swap/ {print $2}'` == "0" ]] && swap_usage="0.0%" || swap_usage=`free -m | awk '/Swap/ { printf("%3.1f%%", $3/$2*100) }'`
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usersnum=$(expr $(users | wc -w) + 1)
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time=`uptime | grep -ohe 'up .*' | sed 's/,/\ hours/g' | awk '{ printf $2" "$3 }'`
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processes=`ps aux | wc -l`
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localip=`hostname -I | awk '{print $1}'`
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IPv4=`timeout 1s dig -4 TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed 's/\"//g'`
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[[ "$IPv4" == "" ]] && IPv4=`timeout 1s dig -4 TXT CH +short whoami.cloudflare @1.0.0.1 | sed 's/\"//g'`
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IPv6=`timeout 1s dig -6 TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed 's/\"//g'`
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[[ "$IPv6" == "" ]] && IPv6=`timeout 1s dig -6 TXT CH +short whoami.cloudflare @2606:4700:4700::1001 | sed 's/\"//g'`
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# IP_Check=$(echo $IPv4 | awk -F. '$1<255&&$2<255&&$3<255&&$4<255{print "isIPv4"}')
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IP_Check="$IPv4"
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if expr "$IP_Check" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
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for i in 1 2 3 4; do
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if [ $(echo "$IP_Check" | cut -d. -f$i) -gt 255 ]; then
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echo "fail ($IP_Check)"
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exit 1
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fi
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done
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IP_Check="isIPv4"
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fi
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[[ ${IPv6: -1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/.$/0/')
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[[ ${IPv6:0:1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/^./0/')
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IP6_Check="$IPv6"":"
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IP6_Hex_Num=`echo "$IP6_Check" | tr -cd ":" | wc -c`
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IP6_Hex_Abbr="0"
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if [[ `echo "$IPv6" | grep -i '[[:xdigit:]]' | grep ':'` ]] && [[ "$IP6_Hex_Num" -le "8" ]]; then
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for ((i=1; i<="$IP6_Hex_Num"; i++)){
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IP6_Hex=$(echo "$IP6_Check" | cut -d: -f$i)
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[[ "$IP6_Hex" == "" ]] && IP6_Hex_Abbr=`expr $IP6_Hex_Abbr + 1`
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[[ `echo "$IP6_Hex" | wc -c` -le "4" ]] && {
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if [[ `echo "$IP6_Hex" | grep -iE '[^0-9a-f]'` ]] || [[ "$IP6_Hex_Abbr" -gt "1" ]]; then
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echo "fail ($IP6_Check)"
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exit 1
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fi
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}
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}
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IP6_Check="isIPv6"
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fi
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[[ "${IP6_Check}" != "isIPv6" ]] && IPv6="N/A"
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[[ "${IP_Check}" != "isIPv4" ]] && IPv4="N/A"
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if [[ "${localip}" == "${IPv4}" ]] || [[ "${localip}" == "${IPv6}" ]] || [[ -z "${localip}" ]]; then
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# localip=`ip -o a show | grep -w "lo" | grep -w "inet" | cut -d ' ' -f7 | awk '{split($1, a, "/"); print $2 "" a[1]}'`
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localip=`cat /etc/hosts | grep "localhost" | sed -n 1p | awk '{print $1}'`
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fi
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echo " System information as of $date"
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echo
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printf "%-30s%-15s\n" " System Load:" "$load"
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printf "%-30s%-15s\n" " Private IP Address:" "$localip"
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printf "%-30s%-15s\n" " Public IPv4 Address:" "$IPv4"
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printf "%-30s%-15s\n" " Public IPv6 Address:" "$IPv6"
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printf "%-30s%-15s\n" " Memory Usage:" "$memory_usage"
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printf "%-30s%-15s\n" " Usage On /:" "$root_usage"
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printf "%-30s%-15s\n" " Swap Usage:" "$swap_usage"
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printf "%-30s%-15s\n" " Users Logged In:" "$usersnum"
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printf "%-30s%-15s\n" " Processes:" "$processes"
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printf "%-30s%-15s\n" " System Uptime:" "$time"
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echo
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