#!/bin/sh
# /usr/local/sbin/update-issue
#
# This script is based upon a similar script popularized with Red Hat
# and Mandrake. Execute this script automatically from within one of
# the boot scripts, such as rc.local, or execute manually from the
# command line.

source /etc/functions-colors

ISSUE_LOCAL="/etc/issue"
ISSUE_NET="/etc/issue.net"

RELEASE_FILE="/etc/slackware-version"

WARNING="Unallowed access prohibited. All access and activities not\nexplicitly allowed by the administrator are prohibited.\nAll activities are monitored and logged. There is no privacy\non
this system. Unallowed access and activities or any\ncriminal activity will be reported to appropriate personnel."

# determine the current Slackware release version and date
if [ -f $RELEASE_FILE ]; then
  RELEASE_VERSION=$(cat $RELEASE_FILE)
  RELEASE_DATE=`find $RELEASE_FILE -printf "%TY-%Tb-%Td\n"`
fi

OS=$(uname -o)

KERNEL_NAME=$(uname -s)
KERNEL_RELEASE=$(uname -r)
KERNEL_VERSION=$(uname -v)

# ${VARIABLE:Offset:Count}
# LOCALISP=${LOCALISP:((${#KEYWORD})):((${#LOCALISP}-((${#KEYWORD}))))}

#without a SMP box I am only guessing at the following
CPU_INFO=`cat /proc/cpuinfo | grep -i "processor"`
CPU_INFO=${CPU_INFO:12:1}
if [ "$CPU_INFO" = "0" ] ; then
  NUM_CPUS="Single"
else
  NUM_CPUS="Multiple"
fi

CPU_INFO=`cat /proc/cpuinfo | grep -i "cpu MHz"`
CPU_SPEED=${CPU_INFO:11:((${#CPU_INFO}-15))}

CPU_INFO=`cat /proc/cpuinfo | grep -i "model name"`
CPU_MODEL=${CPU_INFO:13:((${#CPU_INFO}-13))}

CPU_TYPE=$(uname -m)

RAM_INFO=`cat /proc/meminfo | grep -i "MemTotal"`
RAM_INFO=${RAM_INFO:16:((${#RAM_INFO}-19))}
RAM_INFO=$(($RAM_INFO/1000))
RAM=$RAM_INFO

BOX_NAME=$(uname -n)

ROOT_PARTITION="`mount | grep "on / type"`"
# ${VARIABLE:Offset:Count}
ROOT_PARTITION=${ROOT_PARTITION:8:2}

# delete the existing /etc/issue
rm -f $ISSUE_LOCAL
rm -f $ISSUE_NET

# Clear the screen. Some people do not like doing this
# so comment out as necessary. Do know that when /etc/issue.net
# is called then /etc/issue is sourced and called immediately
# thereafter. Thus, best not to clear the screen in /etc/issue.
# echo -e -n "${ESC}H${ESC}2J\n" >$ISSUE_LOCAL
echo -e -n "${ESC}H${ESC}2J\n" >$ISSUE_NET

# warning banner for remote network logins
echo -e ${BOLDWHITE}"****************************************************************" >>$ISSUE_NET
echo >>$ISSUE_NET
echo -e $BOLDRED$WARNING${COLOR_RESET} >>$ISSUE_NET
echo >>$ISSUE_NET
echo -e ${BOLDWHITE}"****************************************************************" >>$ISSUE_NET
echo >>$ISSUE_NET

# distro intro banner
echo -e ${BOLDGREEN}$RELEASE_VERSION" $OS ("$RELEASE_DATE")"${COLOR_RESET} >>$ISSUE_LOCAL

# kernel info
echo -e ${BOLDCYAN}$KERNEL_NAME "Kernel $KERNEL_RELEASE"${COLOR_RESET} >>$ISSUE_LOCAL

# cpu info
echo -e ${BOLDWHITE}"$NUM_CPUS $CPU_SPEED MHz $CPU_MODEL $CPU_TYPE CPU with $RAM MB RAM"${COLOR_RESET} >>$ISSUE_LOCAL

# add white space
echo >>$ISSUE_LOCAL

# box info
echo -e "The hostname of this box is "${BOLDYELLOW}$BOX_NAME${COLOR_RESET}"." >>$ISSUE_LOCAL

# terminal info; nice to have with local logins
echo -e "This is terminal ${BOLDYELLOW}\l${COLOR_RESET}." >>$ISSUE_LOCAL
if [ "$ROOT_PARTITION" = "13" ] || [ "$ROOT_PARTITION" = "26" ]; then
  echo -e "You are using the ${BOLDRED}Alternate${COLOR_RESET} Partition!" >>$ISSUE_LOCAL
elif [ "$ROOT_PARTITION" = "16" ] ; then
  echo -e "You are using the ${BOLDRED}Testing${COLOR_RESET} Partition!" >>$ISSUE_LOCAL
fi
echo >>$ISSUE_LOCAL