Rewrite a dynmotd script in full sh.
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#! /usr/bin/env sh
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#############################################################################
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#
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# Usage:
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# * Run it as user: ./usr/local/bin/dynmotd
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# * Run it at user login:
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# <file bash /etc/profile>
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# /usr/local/bin/dynmotd
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# </file>
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# * Or set a cron job with a privileged user (access log files, ...)
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# <file bash /etc/cron.d/dynmotd>
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# */30 * * * * root rm -f /etc/motd && /usr/local/bin/dynmotd > /etc/motd
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# </file>
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#############################################################################
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#### Colors definition
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BLACK='\033[30;40m'
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RED='\033[0;31m'
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REDB='\033[1;31m'
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GREEN='\033[1;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[34;40m'
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MAGENTA='\033[0;35m'
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CYAN='\033[36;40m'
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WHITE='\033[0;37m'
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WHITEB='\033[1;37m'
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RESET='\033[0m'
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## Return the state of processes passed in parameters
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# process_info $PROCESS_LIST_TO_MONITOR $MESSAGE
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process_info() {
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local PROCESS_LIST="${1}"
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local MSG="${2}"
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for PROCESS in ${PROCESS_LIST}; do
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MSG="${MSG}${MAGENTA}+ "
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if (ps ax | grep -v grep | grep ${PROCESS} > /dev/null); then
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MSG="${MSG}${WHITEB}${PROCESS}${RESET} [ ${GREEN}RUNNING${RESET} ] "
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else
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MSG="${MSG}${WHITEB}${PROCESS}${RESET} [ ${REDB}NOT RUNNING${RESET} ] "
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fi
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done
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printf "%b" "${MSG}"
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}
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## Return the listening socket
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# service_info $PORT_LIST_TO_MONITOR $MESSAGE
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service_info() {
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local PORT_LIST="${1}"
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local MSG="${2}"
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for PORT in ${PORT_LIST}; do
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MSG="${MSG}${MAGENTA}+ "
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# If a port listen
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if (netstat -lnt|grep -m1 ${PORT} > /dev/null); then
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# Example: "tcp/127.0.0.1:25"
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MSG="${MSG}${GREEN}`netstat -lnt|grep -m1 ${PORT}|awk '{print $1"/"$4}'`${RESET} "
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else
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# Example: "22: NOT LISTENING"
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MSG="${MSG}${REDB}${PORT}: NOT LISTENING${RESET} "
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fi
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done
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printf "%b" "${MSG}"
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}
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#+++++++++++++++++++: System Data :+++++++++++++++++++
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HOSTNAME=$(hostname)
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NET_ADDR=$(hostname -I)
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KERNEL_VER=$(uname -r)
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UPTIME=$(uptime | sed 's/.*up ([^,]*), .*/1/')
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CORE_NUMBER=$(grep "model name" /proc/cpuinfo | wc -l)
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CPU_MODEL=$(grep -m1 "model name" /proc/cpuinfo | awk -F: '{print $2}')
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MEM_FREE=$(grep MemFree /proc/meminfo | awk '{print $2}')
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MEM_TOTAL=$(grep MemTotal /proc/meminfo | awk '{print $2}')
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SWAP_FREE=$(grep SwapFree /proc/meminfo | awk '{print $2}')
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SWAP_TOTAL=$(grep SwapTotal /proc/meminfo | awk '{print $2}')
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#++++++++++++++++++++: User Data :++++++++++++++++++++++
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USERNAME=$(whoami)
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USER_SESSION=$(who | grep $USER | wc -l)
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PROC_COUNT=`ps -Afl | wc -l`
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PROC_COUNT=`expr $PROC_COUNT - 5`
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#PROC_LIMIT=$(ulimit -u)
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#++++++++++++: Authentication Information :+++++++++++++
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#AUTH_LOG_FILE=$(find /var/log -iname "auth.log")
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#SSH_USER_LOGIN=$(grep 'session opened' "${AUTH_LOG_FILE}" | awk '/sshd/' | awk "/${USERNAME}/" | wc -l)
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#SSH_FAIL_LOGIN=$(grep sshd "${AUTH_LOG_FILE}" | awk '/Failed/' | wc -l)
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#SUDO_FAIL=$(grep sudo "${AUTH_LOG_FILE}" | awk '/authentication failure/' | wc -l)
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#SUDO_3_FAIL=$(grep sudo "${AUTH_LOG_FILE}" | awk '/3 incorrect password/' | wc -l)
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MOTD_ORIG='/etc/motd.orig'
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# If an original Motd exist, print it
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if [ -f ${MOTD_ORIG} ]; then
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printf "%b" "${RESET}${MAGENTA}+++++++++++++++++++++++: ${WHITE}MoTD${MAGENTA} :++++++++++++++++++++++++${RESET}"
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while read -r line; do
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printf '\n%s' "${line}"
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done < ${MOTD_ORIG}
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fi
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printf "%b" "\n${RESET}${MAGENTA}+++++++++++++++++++: ${WHITE}System Data${MAGENTA} :+++++++++++++++++++++${RESET}
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${MAGENTA}+ ${WHITE}Hostname ${MAGENTA}= ${GREEN}${HOSTNAME}
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${MAGENTA}+ ${WHITE}Addresses ${MAGENTA}= ${GREEN}${NET_ADDR}
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${MAGENTA}+ ${WHITE}Kernel ${MAGENTA}= ${GREEN}${KERNEL_VER}
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${MAGENTA}+ ${WHITE}Uptime ${MAGENTA}=${GREEN}${UPTIME}
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${MAGENTA}+ ${WHITE}CPU ${MAGENTA}= ${GREEN}${CORE_NUMBER}x${CPU_MODEL}
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${MAGENTA}+ ${WHITE}Memory ${MAGENTA}= ${GREEN}${MEM_FREE}(free)/${MEM_TOTAL}(total) kB
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${MAGENTA}+ ${WHITE}Swap ${MAGENTA}= ${GREEN}${SWAP_FREE}(free)/${SWAP_TOTAL}(total) kB"
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printf "%b" "\n${RESET}${MAGENTA}++++++++++++++++++++: ${WHITE}User Data${MAGENTA} :++++++++++++++++++++++${RESET}
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${MAGENTA}+ ${WHITE}Username ${MAGENTA}= ${GREEN}${USERNAME}
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${MAGENTA}+ ${WHITE}Sessions ${MAGENTA}= ${GREEN}${USER_SESSION}
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${MAGENTA}+ ${WHITE}Processes ${MAGENTA}= ${GREEN}$PROC_COUNT of ${PROC_LIMIT} MAX"
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printf '%b' "\n${MAGENTA}++++++++++++: ${WHITE}Authentication Information${MAGENTA} :+++++++++++++${RESET}"
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#echo -e "${MAGENTA}++++++++++++: ${WHITE}Authentication Information${MAGENTA} :+++++++++++++${RESET} "
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## Count the number of session for all standard's user (with a home/)
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#for SSH_USER in `ls -1 /home/`; do
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#echo -e "${MAGENTA}+ ${WHITE}SSH login ${MAGENTA}= ${GREEN}`grep 'session opened' "${AUTH_LOG_FILE}" | awk '/sshd/' | awk "/${SSH_USER}/" | wc -l` times this week ("${SSH_USER}")"
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##echo -e "${MAGENTA}+ ${WHITE}SSH login ${MAGENTA}= ${GREEN}`grep 'session opened' "${AUTH_LOG_FILE}".1 | awk '/login/' | awk "/${SSH_USER}/" | wc -l` times this week ("${SSH_USER}")"
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#done
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## Count the number of failed ssh authentication
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#echo -e "${MAGENTA}+ ${WHITE}SSH fail ${MAGENTA}= ${GREEN}${SSH_FAIL_LOGIN} fail(s) this week"
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## Count the number of failed sudo authentication
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#echo -e "${MAGENTA}+ ${WHITE}Sudo fail ${MAGENTA}= ${GREEN}${SUDO_FAIL} fail(s) this week
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#${MAGENTA}+ ${WHITE}Sudo 3 fails ${MAGENTA}= ${GREEN}${SUDO_3_FAIL} fail(s) this week"
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printf '%b' "\n${MAGENTA}++++++++++++++++++++: ${WHITE}Disk Usage${MAGENTA} :+++++++++++++++++++++${RESET}"
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# Root partition
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# Replace by rootfs in few kernel version
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DISK_USAGE=$(df | grep -m1 "/$" | awk '{print $5}')
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printf '%b' "\n${MAGENTA}+ ${WHITEB}/${RESET} [ ${DISK_USAGE} ] "
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# Other partition
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for PART in /boot /home /opt /tmp /usr /var /var/lib/vz; do
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# "/...$" : $ to grep only the mount point and not sub-directories (/var: OK; /mnt/temp: nOK)
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if (df | grep "${PART}$" > /dev/null); then
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DISK_USAGE=$(df | grep "${PART}$" | awk '{print $5}')
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printf '%b' "\n${MAGENTA}+ ${WHITEB}${PART}${RESET} [ ${DISK_USAGE} ] "
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fi
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done
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printf '%b' "\n${MAGENTA}+++++++++++++++++++: ${WHITE}Service Info${MAGENTA} :++++++++++++++++++++${RESET}"
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## IF POSTFIX
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MSG=$(process_info "postfix" '')
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MSG=$(service_info "25" "${MSG}")
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printf '%b' "\n${MSG}"
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## FI POSTFIX
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## Service need a warning if running
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YELLOW_SERVICE='tmux screen glances htop automysqlbackup vzdump puppet aptitude'
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for SERVICE in ${YELLOW_SERVICE}; do
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if (ps ax | grep -v grep | grep ${SERVICE} > /dev/null); then
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printf '%b' "\n${MAGENTA}+ ${WHITEB}${SERVICE}${RESET} [ ${YELLOW}RUNNING${RESET} ]"
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fi
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done
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#echo -e "${MAGENTA}+++++++++++++: ${RED}Maintenance Information${MAGENTA} :+++++++++++++++${RESET}
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#${MAGENTA}+${RED}""
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#echo -e "${MAGENTA}+++++++++++++++++++++++++++++++++++++++++++++++++++++++${RESET}"
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