Bash Motd Generator Script

bash_motd_generator.sh

#!/bin/bash

#FILE="/home/user/scripts/motd"
FILE="/etc/motd"
INSTDATE=$(date +%F)
HOSTNAME=$(hostname)
OSRELASE=$(cat /etc/*release | head -1)
#OSDETECT="i-have-to-define"
#IPADDRES=$(ifconfig eth0 | grep -o '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' | head -1)
ETHERADD=$(ifconfig |grep -e ^[a-z] |grep -v lo | awk '{ printf $1 FS}')
INTERFACE=$(hostname -I) 

# if [ -w $FILE ]
# 	then
# 		if [[ -n `egrep -o '[0-9]+++-[0-9]++-[0-9]++' $FILE` ]]
# 		then
# 			IDATE=$(egrep -o '[0-9]+++-[0-9]++-[0-9]++' $FILE)
# 			echo "$FILE was in past $IDATE altered" 
# 			echo "Will be saved as .rpmsave"
# 			FILE=$FILE.rpmsave
# 		fi
# 	else
# 	    	logger -p local0.warn -t ME "`id -un` is not allowed to edit $FILE"
# 	    	echo "File is not Writeable. You are Not allowed to chance Motd"
# 		echo "Will be saved as .rpmsave"
# 		FILE=$FILE.rpmsave
# fi


cat << End-of-Message > $FILE
`echo -en "\033[1;31m"`
    * * * * * * * * * * * * *:  W A R N I N G  :* * * * * * * * * * * * * *
    *THIS SYSTEM IS RESTRICTED TO AUTHORIZED USERS FOR AUTHORIZED USE ONLY*
    *   UNAUTHORIZED ACCESS IS STRICTLY PROHIBITED AND MAY BE PUNISHED    *
    * * * * * * * * * * * * *:  W A R N I N G  :* * * * * * * * * * * * * *
    *							       $INSTDATE *
End-of-Message

printf "    *           %-16s%-42s*\n" "Hostname:" "$HOSTNAME" >>$FILE
printf "    *           %-16s%-42s*\n" "OS:"	   "$OSRELASE" >>$FILE
#printf "    *           %-16s%-42s*\n" "HW:" 	   "$OSDETECT" >>$FILE
#printf "    *           %-16s%-42s*\n" "IP:" 	   "$INTERFACE" >>$FILE
#printf "    *           %-16s%-42s*\n" "IP:" 	   "$IPADDRES" >>$FILE

for i in $ETHERADD
do
	IP=$(ifconfig $i | grep -o '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' | head -1)
	printf "    *           %-16s%-42s*\n" "IP $i"      "$INTERFACE" >>$FILE
done

cat << End-of-Message >> $FILE
    *									  *
    *		Contact:	Alliance Company Group			  *
    *				347 km "Caucasus" Road 			  *
    *				Russia		 			  *
    *		Administrator:	it@alians-kmv.ru			  *
    *									  *
    *		Status:		Productive				  *
    ***********************************************************************
`echo -en "\033[0m"`
End-of-Message