[cmd] change login message.txt

    # очистить файл, в котором хранится статический текст


cat > /etc/motd <<EOF


EOF





# отключить файл по-умолчанию, либо вообще его удалить


chmod a-x /etc/update-motd.d/10-uname





# создать файл для генерации сообщения


touch /etc/update-motd.d/50-itr-motd


chmod a+x /etc/update-motd.d/50-itr-motd





# [edit] Надо вставлять руками в файл, через шел не работает


> /etc/update-motd.d/50-itr-motd


#!/bin/sh


#


# === Config vars === #


#


# Text Color (See http://misc.flogisoft.com/bash/tip_colors_and_formatting)


cDef="\e[39m"   # Reset


dGr="\e[90m"    # Dark Gray


lGr="\e[37m"    # Light Gray


lRd="\e[91m"    # Light Red


lGrn="\e[92m"   # Light Green


lYl="\e[93m"    # Light Yellow


lBl="\e[94m"    # Light Blue


lMg="\e[95m"    # Light Magenta


lCn="\e[96m"    # Light Cyan


Wt="\e[97m"     # White


Bl="\e[34m"     # Blue


Rd="\e[31m"     # Red


Orn="\e[38;5;208m" # Orange


lBl1="\e[38;5;81m" # Light Blue 1


lGrn1="\e[38;5;42m" # Light Green 1


#


# Text format


B="\e[1m"  # Bold


Blnk="\e[5m" # Blink


tRst="\e[0m" # Reset


#


# Hour of day


HOUR=$(date +"%H")


if [ $HOUR -ge 6  -a $HOUR -le 11 ]; then TIME="${lCn}утро"


elif [ $HOUR -ge 12 -a $HOUR -le 17 ]; then TIME="${Orn}день"


elif [ $HOUR -ge 18 -a $HOUR -le 23 ]; then TIME="${lBl1}вечер"


else TIME="${dGr}ночь"


fi


#


# System uptime


uptime=`cat /proc/uptime | cut -f1 -d.`


upDays=$((uptime/60/60/24))


upHours=$((uptime/60/60%24))


upMins=$((uptime/60%60))


#


# System + Memory


IP=`hostname --all-ip-addresses | sed 's/ /; /g' | sed 's/; $//g'`


HOST=`hostname`


USER=`whoami`


SYSTEM=`cat /etc/os-release | grep "PRETTY_NAME" | sed 's/PRETTY_NAME=//g' | sed 's/["]//g'`


LOAD_AVG=`cat /proc/loadavg | awk '{print $1 " " $2 " " $3}'`


NUM_PROCS=`ps aux | wc -l`





MEM_PRC=`free --mebi | grep Mem | awk '{print 100-int($3 / $2 * 100 + 0.5)}'`


if [ $MEM_PRC -ge 1  -a $MEM_PRC -le 20 ]; then MEM_CLR="${lRd}"


elif [ $MEM_PRC -ge 21 -a $MEM_PRC -le 40 ]; then MEM_CLR="${lYl}"


elif [ $MEM_PRC -ge 41 -a $MEM_PRC -le 70 ]; then MEM_CLR="${lBl1}"


else MEM_CLR="${lGrn1}"


fi


MEM_REL=`free --mebi -h | grep Mem | awk '{print $3 " used / " $2 " total"}'`





SWP_PRC=`free --mebi | grep Swap | awk '{print 100-int($3 / $2 * 100 + 0.5)}'`


if [ $SWP_PRC -ge 1  -a $SWP_PRC -le 20 ]; then SWP_CLR="${lRd}"


elif [ $SWP_PRC -ge 21 -a $SWP_PRC -le 40 ]; then SWP_CLR="${lYl}"


elif [ $SWP_PRC -ge 41 -a $SWP_PRC -le 70 ]; then SWP_CLR="${lBl1}"


else SWP_CLR="${lGrn1}"


fi


SWP_REL=`free --mebi -h | grep Swap | awk '{print $3 " used / " $2 " total"}'`





DISK_PRC=`df -l / | tail -1 | awk '{print $5}' | sed 's/\%//g' | awk '{print 100-$1}'`


if [ $DISK_PRC -ge 0  -a $DISK_PRC -le 7 ]; then DISK_CLR="${Rd}"


elif [ $DISK_PRC -ge 8 -a $DISK_PRC -le 20 ]; then DISK_CLR="${lRd}"


elif [ $DISK_PRC -ge 21 -a $DISK_PRC -le 40 ]; then DISK_CLR="${lYl}"


elif [ $DISK_PRC -ge 41 -a $DISK_PRC -le 70 ]; then DISK_CLR="${lBl1}"


else DISK_CLR="${lGrn1}"


fi


DISK_TOTAL=`df -lh / | tail -1 | awk '{print $2}'`


DISK_USED=`df -lh / | tail -1 | awk '{print $3}'`





#


# === echo text === #


echo ""


echo " ${lGrn1}`date +"%Y.%m.%d(%j) %H:%M:%S"` => ${lGr}уже ${TIME}, ${Wt}${USER}"


echo ""


echo " ${dGr}машина ${Wt}${HOST} ${dGr}(${lGr}${IP}${dGr})${cDef}"


echo " ${dGr}система ${lGr}${SYSTEM} ${dGr}[${lBl1}`users | wc -w` ${lGr}users online${dGr}]"


echo " ${dGr}работает ${Wt}$upDays${lGr}д. ${Wt}$upHours${lGr}ч. ${Wt}$upMins${lGr}м."


echo ""


echo " ${dGr}нагрузка ${lBl1}$LOAD_AVG ${lGr}load average ${dGr}(${Wt}$NUM_PROCS ${lGr}proc running${dGr})"


echo " ${dGr}mem ${MEM_CLR}$MEM_PRC% ${lGr}free ${dGr}(${lGr}$MEM_REL${dGr})"


echo " ${dGr}swp ${SWP_CLR}$SWP_PRC% ${lGr}free ${dGr}(${lGr}$SWP_REL${dGr})"


echo " ${dGr}disk ${lGr}'/' ${DISK_CLR}$DISK_PRC% ${lGr}free ${dGr}(${DISK_CLR}${DISK_USED} used ${lGr}/ ${Wt}${DISK_TOTAL} ${lGr}total${dGr})"


echo ${cDef} ""


#



    изменён: 23 октября 2023 г.