New self-contained motd script
This commit is contained in:
@@ -1,88 +1,80 @@
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#!/usr/bin/env bash
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# Install motd scripts
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# Install and generate motd
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# Bryan C. Roessler
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parent="${BASH_SOURCE[0]}"
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parent=${parent%/*}
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main() {
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if [[ " $1 " == " --motd " ]]; then
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print_motd
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else
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parent="${BASH_SOURCE[0]}"
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parent=${parent%/*}
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[[ -f "$parent"/script-functions ]] && . "$parent"/script-functions || exit 1
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[[ -f "$parent"/script-functions ]] && . "$parent"/script-functions || exit 1
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is_root
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is_root
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DEBUG=0
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[[ "$#" -gt 0 ]] && echo "Debug on" && DEBUG=1
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cp "$0" /usr/local/bin/
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script="/usr/local/bin/${0##*/}"
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service="/usr/lib/systemd/system/motd.service"
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timer="/usr/lib/systemd/system/motd.timer"
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installdir="/usr/local/bin"
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install_services
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fi
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}
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[[ -d "$installdir" ]] || mkdir -p "$installdir"
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print_motd() {
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# colors
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default='\e[0m'
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green='\e[32m'
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red='\e[31m'
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dim='\e[2m'
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undim='\e[0m'
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if (( DEBUG )); then
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script="generate-motd.sh"
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else
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script="$installdir/generate-motd.sh"
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fi
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cat <<- 'EOF' > "$script"
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#!/usr/bin/env bash
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echo -n '
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# shellcheck disable=SC2016
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echo -e '
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_ _ _ _ _
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| | | | | | | | | |
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| |__| | __ _ _ __| |_ _ __ ___ __ _ _ __ | | __ _| |__
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| __ |/ _` | `__| __| `_ ` _ \ / _` | `_ \ | | / _` | `_ \
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| | | | (_| | | | |_| | | | | | (_| | | | | | |___| (_| | |_) |
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|_| |_|\__,_|_| \__|_| |_| |_|\__,_|_| |_| |______\__,_|_.__/
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'
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EOF
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|_| |_|\__,_|_| \__|_| |_| |_|\__,_|_| |_| |______\__,_|_.__/ '
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# System info
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cat <<- 'EOF' >> "$script"
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# get load averages
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IFS=" " read LOAD1 LOAD5 LOAD15 <<<$(cat /proc/loadavg | awk '{ print $1,$2,$3 }')
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# get free memory
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IFS=" " read USED AVAIL TOTAL <<<$(free -htm | grep "Mem" | awk {'print $3,$7,$2'})
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# get processes
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PROCESS=`ps -eo user=|sort|uniq -c | awk '{ print $2 " " $1 }'`
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PROCESS_ALL=`echo "$PROCESS"| awk {'print $2'} | awk '{ SUM += $1} END { print SUM }'`
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PROCESS_ROOT=`echo "$PROCESS"| grep root | awk {'print $2'}`
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PROCESS_USER=`echo "$PROCESS"| grep -v root | awk {'print $2'} | awk '{ SUM += $1} END { print SUM }'`
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# get processors
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PROCESSOR_NAME=`grep "model name" /proc/cpuinfo | cut -d ' ' -f3- | awk {'print $0'} | head -1`
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PROCESSOR_COUNT=`grep -ioP 'processor\t:' /proc/cpuinfo | wc -l`
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# System info
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# get load averages
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IFS=" " read -r LOAD1 LOAD5 LOAD15 <<<"$(awk '{ print $1,$2,$3 }' /proc/loadavg)"
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# get free memory
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IFS=" " read -r USED AVAIL TOTAL <<<"$(free -htm | grep "Mem" | awk '{print $3,$7,$2}')"
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# get processes
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PROCESS=$(ps -eo user=|sort|uniq -c | awk '{ print $2 " " $1 }')
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PROCESS_ALL=$(echo "$PROCESS"| awk '{print $2}' | awk '{ SUM += $1} END { print SUM }')
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PROCESS_ROOT=$(echo "$PROCESS"| grep root | awk '{print $2}')
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PROCESS_USER=$(echo "$PROCESS"| grep -v root | awk '{print $2}' | awk '{ SUM += $1} END { print SUM }')
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# get processors
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PROCESSOR_NAME=$(grep "model name" /proc/cpuinfo | cut -d ' ' -f3- | awk '{print $0}' | head -1)
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PROCESSOR_COUNT=$(grep -ioP 'processor\t:' /proc/cpuinfo | wc -l)
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W="\e[0;39m"
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G="\e[1;32m"
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echo -e "
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${default}Distro......: $default$(cat /etc/*release | grep "PRETTY_NAME" | cut -d "=" -f 2- | sed 's/"//g')
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${default}Kernel......: $default$(uname -sr)
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${default}Uptime......: $default$(uptime -p)
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${default}Load........: $green$LOAD1$default (1m), $green$LOAD5$default (5m), $green$LOAD15$default (15m)
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${default}Processes...: $default$green$PROCESS_ROOT$default (root), $green$PROCESS_USER$default (user), $green$PROCESS_ALL$default (total)
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${default}CPU.........: $default$PROCESSOR_NAME ($green$PROCESSOR_COUNT$default vCPU)
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${default}Memory......: $green$USED$default used, $green$AVAIL$default avail, $green$TOTAL$default total$default"
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echo -e "
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$W Distro......: $W`cat /etc/*release | grep "PRETTY_NAME" | cut -d "=" -f 2- | sed 's/"//g'`
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$W Kernel......: $W`uname -sr`
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$W Uptime......: $W`uptime -p`
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$W Load........: $G$LOAD1$W (1m), $G$LOAD5$W (5m), $G$LOAD15$W (15m)
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$W Processes...: $W$G$PROCESS_ROOT$W (root), $G$PROCESS_USER$W (user), $G$PROCESS_ALL$W (total)
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$W CPU.........: $W$PROCESSOR_NAME ($G$PROCESSOR_COUNT$W vCPU)
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$W Memory......: $G$USED$W used, $G$AVAIL$W avail, $G$TOTAL$W total$W"
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EOF
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# Disk usage
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# config
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max_usage=90
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bar_width=50
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# Disk usage
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cat <<- 'EOF' >> "$script"
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# config
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max_usage=90
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bar_width=50
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# colors
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white="\e[39m"
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green="\e[1;32m"
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red="\e[1;31m"
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dim="\e[2m"
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undim="\e[0m"
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# disk usage: ignore zfs, squashfs & tmpfs
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while IFS= read -r line; do dfs+=("$line"); done < <(df -H -x zfs -x squashfs -x tmpfs -x devtmpfs -x overlay --output=target,pcent,size | tail -n+2)
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printf "\nDisk usage\n"
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# disk usage: ignore zfs, squashfs & tmpfs
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while IFS= read -r line; do dfs+=("$line"); done < <(df -H -x zfs -x squashfs -x tmpfs -x devtmpfs -x overlay --output=target,pcent,size | tail -n+2)
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printf "\nDisk usage\n"
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for line in "${dfs[@]}"; do
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for line in "${dfs[@]}"; do
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# get disk usage
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usage=$(echo "$line" | awk '{print $2}' | sed 's/%//')
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used_width=$((($usage*$bar_width)/100))
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used_width=$(((usage*bar_width)/100))
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# color is green if usage < max_usage, else red
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if [ "${usage}" -ge "${max_usage}" ]; then
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color=$red
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@@ -91,158 +83,141 @@ for line in "${dfs[@]}"; do
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fi
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# print green/red bar until used_width
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bar="[${color}"
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for ((i=0; i<$used_width; i++)); do
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for ((i=0; i<used_width; i++)); do
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bar+="="
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done
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# print dimmmed bar until end
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bar+="${white}${dim}"
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for ((i=$used_width; i<$bar_width; i++)); do
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bar+="${default}${dim}"
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for ((i=used_width; i<bar_width; i++)); do
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bar+="="
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done
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bar+="${undim}]"
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# print usage line & bar
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echo "${line}" | awk '{ printf("%-31s%+3s used out of %+4s\n", $1, $2, $3); }' | sed -e 's/^/ /'
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echo -e "${bar}" | sed -e 's/^/ /'
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done
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EOF
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done
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# # Disk health
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# cat <<- 'EOF' >> "$script"
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# # config
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# MAX_TEMP=40
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# # set column width
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# COLUMNS=2
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# # colors
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# white="\e[39m"
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# green="\e[1;32m"
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# red="\e[1;31m"
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# dim="\e[2m"
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# undim="\e[0m"
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# # Disk health
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# cat <<- 'EOF' >> "$script"
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# # config
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# MAX_TEMP=40
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# # set column width
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# COLUMNS=2
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# # colors
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# # disks to check
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# disks=(sda sdb sdc sdd sde sdf sdg sdi)
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# disknames=(sda sdb sdc sdd sde sdf sdg sdi)
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# # disks to check
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# disks=(sda sdb sdc sdd sde sdf sdg sdi)
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# disknames=(sda sdb sdc sdd sde sdf sdg sdi)
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# # hddtemp
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# hddtemp_host=localhost
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# hddtemp_port=7634
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# # hddtemp
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# hddtemp_host=localhost
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# hddtemp_port=7634
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# # logfiles to check
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# logfiles='/var/log/syslog /var/log/syslog.1'
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# # logfiles to check
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# logfiles='/var/log/syslog /var/log/syslog.1'
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# # get all lines with smartd entries from syslog
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# lines=$(tac $logfiles | grep -hiP 'smartd\[[[:digit:]]+\]:' | grep -iP "previous self-test")
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# # use nc to query temps from hddtemp daemon
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# hddtemp=$(timeout 0.01 nc $hddtemp_host $hddtemp_port | sed 's/|//m' | sed 's/||/ \n/g')
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# # get all lines with smartd entries from syslog
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# lines=$(tac $logfiles | grep -hiP 'smartd\[[[:digit:]]+\]:' | grep -iP "previous self-test")
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# # use nc to query temps from hddtemp daemon
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# hddtemp=$(timeout 0.01 nc $hddtemp_host $hddtemp_port | sed 's/|//m' | sed 's/||/ \n/g')
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# out=""
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# for i in "${!disks[@]}"; do
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# disk=${disks[$i]}
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# # use disknames if given
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# diskname=${disknames[$i]}
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# if [ -z "${diskname}" ]; then
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# diskname=$disk
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# fi
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# uuid=$(blkid -s UUID -o value "/dev/${disk}")
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# status=$( (grep "${uuid}" <<< "${lines}") | grep -m 1 -oP "previous self-test.*" | awk '{ print $4 " " $5 }')
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# temp=$( (grep "${disk}" <<< "${hddtemp}") | awk -F'|' '{ print $3 }')
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# out=""
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# for i in "${!disks[@]}"; do
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# disk=${disks[$i]}
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# # use disknames if given
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# diskname=${disknames[$i]}
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# if [ -z "${diskname}" ]; then
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# diskname=$disk
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# fi
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# uuid=$(blkid -s UUID -o value "/dev/${disk}")
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# status=$( (grep "${uuid}" <<< "${lines}") | grep -m 1 -oP "previous self-test.*" | awk '{ print $4 " " $5 }')
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# temp=$( (grep "${disk}" <<< "${hddtemp}") | awk -F'|' '{ print $3 }')
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# # color green if temp <= MAX_TEMP, else red
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# if [[ "${temp}" -gt "${MAX_TEMP}" ]]; then
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# color=$red
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# else
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# color=$green
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# fi
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# # add "C" if temp is numeric
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# if [[ "$temp" =~ ^[0-9]+$ ]]; then
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# temp="${temp}C"
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# fi
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# # color green if status is "without error", else red
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# if [[ "${status}" == "without error" ]]; then
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# status_color=$green
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# else
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# status_color=$red
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# fi
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# # color green if temp <= MAX_TEMP, else red
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# if [[ "${temp}" -gt "${MAX_TEMP}" ]]; then
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# color=$red
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# else
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# color=$green
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# fi
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# # add "C" if temp is numeric
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# if [[ "$temp" =~ ^[0-9]+$ ]]; then
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# temp="${temp}C"
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# fi
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# # color green if status is "without error", else red
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# if [[ "${status}" == "without error" ]]; then
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# status_color=$green
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# else
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# status_color=$red
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# fi
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# # print temp & smartd error
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# out+="${diskname}:,${color}${temp}${undim} | ${status_color}${status}${undim},"
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# # insert \n every $COLUMNS column
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# if [ $((($i+1) % $COLUMNS)) -eq 0 ]; then
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# out+="\n"
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# fi
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# done
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# out+="\n"
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# # print temp & smartd error
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# out+="${diskname}:,${color}${temp}${undim} | ${status_color}${status}${undim},"
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# # insert \n every $COLUMNS column
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# if [ $((($i+1) % $COLUMNS)) -eq 0 ]; then
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# out+="\n"
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# fi
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# done
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# out+="\n"
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# printf "\ndisk status:\n"
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# printf "$out" | column -ts $',' | sed -e 's/^/ /'
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# EOF
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# printf "\ndisk status:\n"
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# printf "$out" | column -ts $',' | sed -e 's/^/ /'
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# EOF
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# Services
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cat <<- 'EOF' >> "$script"
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# set column width
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COLUMNS=2
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# colors
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green="\e[1;32m"
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red="\e[1;31m"
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undim="\e[0m"
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# Services
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COLUMNS=2
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services=("fail2ban" "firewalld" "nmb" "motion" "btrfs-balance.timer" "btrfs-scrub.timer" "smb" "backup.timer" "btrbk.timer" "fstrim.timer" "dnf-automatic.timer" "smartd" "cockpit.socket" "generate-motd.timer")
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# sort services
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IFS=$'\n' services=($(sort <<<"${services[*]}"))
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unset IFS
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services=(
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btrfs-balance.timer btrfs-scrub.timer backup.timer btrbk.timer fstrim.timer
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fail2ban firewalld smb nmb motion smartd cockpit.socket
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dnf-automatic.timer motd.timer
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)
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service_status=()
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# get status of all services
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for service in "${services[@]}"; do
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service_status+=($(systemctl is-active "$service"))
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done
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service_status=()
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# get status of all services
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for service in "${services[@]}"; do
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service_status+=("$(systemctl is-active "$service")")
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done
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out=""
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for i in ${!services[@]}; do
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out=""
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for i in "${!services[@]}"; do
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# color green if service is active, else red
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if [[ "${service_status[$i]}" == "active" ]]; then
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out+="${services[$i]}:,${green}${service_status[$i]}${undim},"
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out+="${services[$i]%.*}:,${green}${service_status[$i]}${undim},"
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else
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out+="${services[$i]}:,${red}${service_status[$i]}${undim},"
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out+="${services[$i]%.*}:,${red}${service_status[$i]}${undim},"
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fi
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# insert \n every $COLUMNS column
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if [ $((($i+1) % $COLUMNS)) -eq 0 ]; then
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if [[ $(((i+1) % COLUMNS)) -eq 0 ]]; then
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out+="\n"
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fi
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done
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out+="\n"
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done
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printf "\nServices\n"
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printf "$out" | column -ts $',' | sed -e 's/^/ /'
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EOF
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printf "\nServices\n"
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printf "%b\n" "$out" | column -ts $',' | sed -e 's/^/ /'
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# Fail2Ban
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cat <<- 'EOF' >> "$script"
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# fail2ban-client status to get all jails, takes about ~70ms
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jails=($(fail2ban-client status | grep "Jail list:" | sed "s/ //g" | awk '{split($2,a,",");for(i in a) print a[i]}'))
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# Fail2Ban
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# fail2ban-client status to get all jails, takes about ~70ms
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read -r -a jails <<< "$(fail2ban-client status | grep "Jail list:" | sed "s/ //g" | awk '{split($2,a,",");for(i in a) print a[i]}')"
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out="jail,failed,total,banned,total\n"
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out="jail,failed,total,banned,total\n"
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for jail in ${jails[@]}; do
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for jail in "${jails[@]}"; do
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# slow because fail2ban-client has to be called for every jail (~70ms per jail)
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status=$(fail2ban-client status ${jail})
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status=$(fail2ban-client status "$jail")
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failed=$(echo "$status" | grep -ioP '(?<=Currently failed:\t)[[:digit:]]+')
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totalfailed=$(echo "$status" | grep -ioP '(?<=Total failed:\t)[[:digit:]]+')
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banned=$(echo "$status" | grep -ioP '(?<=Currently banned:\t)[[:digit:]]+')
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totalbanned=$(echo "$status" | grep -ioP '(?<=Total banned:\t)[[:digit:]]+')
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out+="$jail,$failed,$totalfailed,$banned,$totalbanned\n"
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done
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done
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printf "\nfail2ban status\n"
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printf $out | column -ts $',' | sed -e 's/^/ /'
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EOF
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# Help links
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cat <<- 'EOF' >> "$script"
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echo "\
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printf "\nFail2ban\n"
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printf "%b\n" "$out" | column -ts $',' | sed -e 's/^/ /'
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# Help links
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echo -e '
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Links (ctrl+click to follow)
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Server Manual.........: https://tinyurl.com/jjz9h6fr
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Cockpit (for admins)..: http://localhost:9090
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@@ -251,78 +226,25 @@ Links (ctrl+click to follow)
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RStudio Server........: http://localhost:8787
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Robot Computer........: vnc://192.168.16.101:5900
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Windows 10 VM.........: vnc://localhost:5900 (pw: hartman)
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"
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EOF
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'
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# Scheduled reboot
|
||||
cat <<- "EOF" >> "$script"
|
||||
if systemctl is-active scheduled-reboot.timer &>/dev/null; then
|
||||
# Scheduled reboot
|
||||
if systemctl is-active scheduled-reboot.timer &>/dev/null; then
|
||||
echo -n "Next scheduled reboot: "
|
||||
time=$(systemctl cat scheduled-reboot.timer | grep OnCalendar=)
|
||||
time=${time#*=}
|
||||
echo "$time"
|
||||
fi
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
# cat <<- 'EOF' > "$script"
|
||||
# #!/usr/bin/env bash
|
||||
|
||||
# [[ -v NO_MOTD ]] && exit 0
|
||||
|
||||
# USER=$(whoami)
|
||||
# HOSTNAME=$(uname -n)
|
||||
# ARRAY=$(df -Ph | grep array | awk '{print $4}' | tr -d '\n')
|
||||
# ROOT=$(df -Ph | grep sdb3 | awk '{print $4}' | tr -d '\n')
|
||||
# BACKUP=$(df -Ph | grep backup | awk '{print $4}' | tr -d '\n')
|
||||
|
||||
# MEMUSED=$(free -t -m | grep "Mem:" | awk '{print $3" MB";}')
|
||||
# MEMTOTAL=$(free -t -m | grep "Mem:" | awk '{print $2" MB";}')
|
||||
# PSA=$(ps -Afl | wc -l)
|
||||
|
||||
# SWAPMEM=$(free -m | tail -n 1 | awk '{print $3}')
|
||||
|
||||
# #System uptime
|
||||
# uptime=$(cut -f1 -d. /proc/uptime)
|
||||
# upDays=$((uptime/60/60/24))
|
||||
# upHours=$((uptime/60/60%24))
|
||||
# upMins=$((uptime/60%60))
|
||||
# upSecs=$((uptime%60))
|
||||
|
||||
# #System load
|
||||
# LOAD1=$(awk {'print $1'} /proc/loadavg)
|
||||
# LOAD5=$(awk {'print $2'} /proc/loadavg)
|
||||
# LOAD15=$(awk {'print $3'} /proc/loadavg)
|
||||
|
||||
|
||||
|
||||
# echo "
|
||||
# ===========================================================================
|
||||
# - Hostname............: $HOSTNAME
|
||||
# - Release.............: $(cat /etc/redhat-release)
|
||||
# - Users...............: Currently $(users | wc -w) user(s) logged on
|
||||
# ===========================================================================
|
||||
# - Current user........: $USER
|
||||
# - CPU usage...........: $LOAD1, $LOAD5, $LOAD15 (1, 5, 15 min)
|
||||
# - Memory used.........: $MEMUSED / $MEMTOTAL
|
||||
# - Processes...........: $PSA running
|
||||
# - System uptime.......: $upDays days $upHours hours $upMins minutes $upSecs seconds
|
||||
# - Disk space HOME|ROOT: $ROOT remaining
|
||||
# - Disk space ARRAY....: $ARRAY remaining
|
||||
# - Disk space BACKUP...: $BACKUP remaining
|
||||
# ===========================================================================
|
||||
# "
|
||||
# EOF
|
||||
|
||||
generate-services() {
|
||||
service="/usr/lib/systemd/system/generate-motd.service"
|
||||
timer="/usr/lib/systemd/system/generate-motd.timer"
|
||||
install_services() {
|
||||
cat <<-EOF > "$service"
|
||||
[Unit]
|
||||
Description=Generate MoTD
|
||||
|
||||
[Service]
|
||||
Type=simple
|
||||
ExecStart=/usr/bin/bash -c '$script > /etc/motd'
|
||||
ExecStart=/usr/bin/bash -c '$script --motd > /etc/motd'
|
||||
|
||||
[Install]
|
||||
WantedBy=default.target
|
||||
@@ -338,18 +260,12 @@ generate-services() {
|
||||
[Install]
|
||||
WantedBy=timers.target
|
||||
EOF
|
||||
|
||||
chmod +x "$script" &&
|
||||
systemctl daemon-reload &&
|
||||
systemctl enable --now "${timer##*/}"
|
||||
}
|
||||
|
||||
chmod +x "$script"
|
||||
|
||||
if (( DEBUG )); then
|
||||
bash generate-motd.sh
|
||||
cat -n generate-motd.sh
|
||||
rm generate-motd.sh
|
||||
else
|
||||
generate-services && \
|
||||
systemctl daemon-reload && \
|
||||
systemctl enable --now generate-motd.timer
|
||||
fi
|
||||
main "$@"
|
||||
|
||||
exit $?
|
||||
Reference in New Issue
Block a user