Mon MOTD dynamique

motd.sh

#!/bin/bash

function getIP() {
	IFACE=$1
	IFCFG=$(/sbin/ifconfig ${IFACE} 2>&1 | /bin/grep "inet " )
	if [ $? -eq 0 ]; then
		IP=$(echo ${IFCFG} | sed -r -e 's#\s*inet ([^ ]*).*#\1#;s/addr://')
	else
		IP="Not connected"
	fi

	echo ${IP}
}

function prtSysInfos {
	TITLE="Systeme"
	printf -v sep1 %${KEYSIZE}s
	printf -v sep2 %$((${LARGEUR}-${#sep1}-${#TITLE}-4))s

	printf "${Violet}${sep1// /+}: ${Blanc}${TITLE}${Violet} :${sep2// /+}\n"

	i=0
	while [ $i -lt ${NBLINE} ]; do
		i=$(($i+1))
		eval "KEY=\${L${i}K}"
		eval "VAL=\${L${i}V}"
		printf "${Violet}+ ${Blanc}%-$((${#sep1}-3))s${Violet}=  ${Vert}%-$((${MAX}+2))s${Violet}+\n" "${KEY}" "${VAL}"
	done
}

function prtLocIF {
	local IFNAME=$1
	local IP=$(getIP ${IFNAME})

	printf "${Violet}+ ${Blanc}%-$((${#sep1}-3))s${Violet}=  ${Vert}%-$((${MAX}+2))s${Violet}+\n" "IPv4 LAN" "${IFNAME} - ${IP}"
}

function prtPubIF {
	# Detection de l'IP publique si elle n'est pas dans la configuration
	if [ -z $PUBIP ]; then
		PUBIP=$(wget -q -4 -O - http://icanhazip.com/ | tail)
	fi

	printf "${Violet}+ ${Blanc}%-$((${#sep1}-3))s${Violet}=  ${Vert}%-$((${MAX}+2))s${Violet}+\n" "IPv4 Pub" "${PUBIP}"
}

function prtNetInfos {

	TITLE="Reseau"

	printf -v sep1 %${KEYSIZE}s
	printf -v sep2 %$((${LARGEUR}-${#sep1}-${#TITLE}-4))s

	echo -e "${Violet}${sep1// /+}: ${Blanc}${TITLE}${Violet} :${sep2// /+}"
	if [ $SHOWPUB -eq 1 ]; then
		prtPubIF
	fi
	for IF in ${MYIFS[@]}; do prtLocIF ${IF}; done
}

function prtEnd {
	printf -v line %${LARGEUR}s
	echo -e "${Violet}${line// /+}${NC}"
}

# Colors
NC="\033[0;0m"
Vert="\033[0;32m"
Violet="\033[0;35m"
Blanc="\033[0;37m"
BVert="\033[1;32m"

source /etc/hostConf
source /etc/os-release

: ${MYIFS:="eth0 wlan0"}
: ${SHOWPUB:=1}
: ${NBLINE:=3}
: ${KEYSIZE:=12}

MEMSIZEk=`cat /proc/meminfo | grep MemTotal | awk {'print $2'}`
MEMSIZE="$((${MEMSIZEk}/1024)) MB"

L1K="Systeme"
L1V="$(hostname) / ${PRETTY_NAME}"

L2K="Fonction"
L2V="$(uptime | sed -r 's/.*up\s+([^,]*), .*/\1/')"

L3K="Memoire"
L3V="${MEMSIZE}"

: ${MAX:=${#L1V}}
LARGEUR=$((${#L1V}+5+${KEYSIZE}))

prtSysInfos


prtNetInfos
prtEnd