#!/bin/bash if [ $EUID -eq 0 ]; then echo -ne "\033[0;31mDo NOT run this script as root. Exiting.\e[0m\n" exit 1 fi DJANGO_SEKRET=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 50 | head -n 1) SALTPW=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1) ADMINURL=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 30 | head -n 1) GREEN='\033[0;32m' YELLOW='\033[1;33m' BLUE='\033[0;34m' NC='\033[0m' cls() { printf "\033c" } print_green() { printf >&2 "${GREEN}%0.s-${NC}" {1..80} printf >&2 "\n" printf >&2 "${GREEN}${1}${NC}\n" printf >&2 "${GREEN}%0.s-${NC}" {1..80} printf >&2 "\n" } cls echo -ne "${YELLOW}Create a username for the postgres database${NC}: " read pgusername echo -ne "${YELLOW}Create a password for the postgres database${NC}: " read pgpw echo -ne "${YELLOW}Enter the backend API domain for the rmm${NC}: " read rmmdomain echo -ne "${YELLOW}Enter the frontend domain for the rmm${NC}: " read frontenddomain echo -ne "${YELLOW}Enter the domain for meshcentral${NC}: " read meshdomain echo -ne "${YELLOW}Enter your username for meshcentral${NC}: " read meshusername echo -ne "${YELLOW}Enter your email address for let's encrypt renewal notifications${NC}: " read letsemail print_green 'Creating saltapi user' sudo adduser --no-create-home --disabled-password --gecos "" saltapi echo "saltapi:${SALTPW}" | sudo chpasswd print_green 'Creating sudoers conf to restart celery' echo "${USER} ALL=(ALL) NOPASSWD: /bin/systemctl restart celerybeat.service" | sudo tee /etc/sudoers.d/${USER} sudo chmod 0440 /etc/sudoers.d/${USER} print_green 'Installing Nginx' sudo apt install -y software-properties-common sudo add-apt-repository -y ppa:nginx/stable sudo apt update sudo apt install -y nginx print_green 'Installing NodeJS' sudo apt install -y curl wget curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash - sudo apt update sudo apt install -y gcc g++ make sudo apt install -y nodejs print_green 'Installing MongoDB' wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add - echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list sudo apt update sudo apt install -y mongodb-org sudo systemctl enable mongod sudo systemctl restart mongod print_green 'Installing MeshCentral' sudo mkdir -p /meshcentral/meshcentral-data sudo chown ${USER}:${USER} -R /meshcentral cd /meshcentral npm install meshcentral cd /home/${USER} sudo chown ${USER}:${USER} -R /meshcentral meshcfg="$(cat << EOF { "settings": { "Cert": "${meshdomain}", "MongoDb": "mongodb://127.0.0.1:27017", "MongoDbName": "meshcentral", "WANonly": true, "Minify": 1, "Port": 4430, "AliasPort": 443, "RedirPort": 800, "AllowLoginToken": true, "AllowFraming": true, "_AgentPing": 60, "AgentPong": 300, "AllowHighQualityDesktop": true, "TlsOffload": "127.0.0.1", "MaxInvalidLogin": { "time": 5, "count": 5, "coolofftime": 30 } }, "domains": { "": { "Title": "Dev RMM", "Title2": "DevRMM", "NewAccounts": false, "mstsc": true, "CertUrl": "https://${meshdomain}:443/", "GeoLocation": true, "httpheaders": { "Strict-Transport-Security": "max-age=360000", "_x-frame-options": "sameorigin", "Content-Security-Policy": "default-src 'none'; script-src 'self' 'unsafe-inline'; connect-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'; frame-src 'self'; media-src 'self'" } } } } EOF )" echo "${meshcfg}" > /meshcentral/meshcentral-data/config.json print_green 'Installing python, redis and git' sudo add-apt-repository -y ppa:deadsnakes/ppa sudo apt update sudo apt install -y python3.7 python3.7-venv python3.7-dev python3-pip python3-dev python3-venv python3-setuptools ca-certificates redis git python3-cherrypy3 print_green 'Installing postgresql' sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list' wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add - sudo apt update sudo apt install -y postgresql-11 print_green 'Creating database for the rmm' sudo -u postgres psql -c "CREATE DATABASE tacticalrmm" sudo -u postgres psql -c "CREATE USER ${pgusername} WITH PASSWORD '${pgpw}'" sudo -u postgres psql -c "ALTER ROLE ${pgusername} SET client_encoding TO 'utf8'" sudo -u postgres psql -c "ALTER ROLE ${pgusername} SET default_transaction_isolation TO 'read committed'" sudo -u postgres psql -c "ALTER ROLE ${pgusername} SET timezone TO 'UTC'" sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE tacticalrmm TO ${pgusername}" sudo usermod -a -G www-data ${USER} sudo chmod 710 /home/${USER} sudo chown ${USER}:www-data /home/${USER} mkdir -p /home/${USER}/rmm sudo mkdir -p /var/log/celery sudo chown ${USER}:${USER} /var/log/celery git clone https://github.com/wh1te909/tacticalrmm.git /home/${USER}/rmm/ sudo chown ${USER}:www-data -R /home/${USER}/rmm/api/tacticalrmm localvars="$(cat << EOF SECRET_KEY = "${DJANGO_SEKRET}" DEBUG = False ALLOWED_HOSTS = ['${rmmdomain}'] ADMIN_URL = "${ADMINURL}/" CORS_ORIGIN_WHITELIST = [ "https://${frontenddomain}" ] DATABASES = { 'default': { 'ENGINE': 'django.db.backends.postgresql', 'NAME': 'tacticalrmm', 'USER': '${pgusername}', 'PASSWORD': '${pgpw}', 'HOST': 'localhost', 'PORT': '5432', } } REST_FRAMEWORK = { 'DATETIME_FORMAT': "%b-%d-%Y - %H:%M", 'DEFAULT_PERMISSION_CLASSES': ( 'rest_framework.permissions.IsAuthenticated', ), 'DEFAULT_AUTHENTICATION_CLASSES': ( 'knox.auth.TokenAuthentication', ), } if not DEBUG: REST_FRAMEWORK.update({ 'DEFAULT_RENDERER_CLASSES': ( 'rest_framework.renderers.JSONRenderer', ) }) EMAIL_USE_TLS = True EMAIL_HOST = 'smtp.gmail.com' EMAIL_HOST_USER = 'example@gmail.com' EMAIL_HOST_PASSWORD = 'yourgmailpassword' EMAIL_PORT = 587 EMAIL_ALERT_RECIPIENTS = ["jsmith@example.com",] SALT_USERNAME = "saltapi" SALT_PASSWORD = "${SALTPW}" SALT_HOST = "127.0.0.1" MESH_USERNAME = "${meshusername}" MESH_SITE = "https://${meshdomain}" REDIS_HOST = "localhost" EOF )" echo "${localvars}" > /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/local_settings.py print_green 'Installing the backend' cd /home/${USER}/rmm/api python3.7 -m venv env source /home/${USER}/rmm/api/env/bin/activate cd /home/${USER}/rmm/api/tacticalrmm pip install --no-cache-dir --upgrade pip pip install --no-cache-dir --upgrade setuptools wheel pip install -r /home/${USER}/rmm/api/tacticalrmm/requirements.txt python manage.py migrate python manage.py collectstatic python manage.py initial_db_setup python manage.py load_chocos printf >&2 "${YELLOW}%0.s*${NC}" {1..80} printf >&2 "\n" printf >&2 "${YELLOW}Please create your login for the RMM website and django admin${NC}\n" printf >&2 "${YELLOW}%0.s*${NC}" {1..80} printf >&2 "\n" echo -ne "Username: " read djangousername python manage.py createsuperuser --username ${djangousername} --email ${letsemail} RANDBASE=$(python manage.py generate_totp) cls python manage.py generate_barcode ${RANDBASE} ${djangousername} ${frontenddomain} deactivate read -n 1 -s -r -p "Press any key to continue..." uwsgini="$(cat << EOF [uwsgi] logto = /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/private/log/uwsgi.log chdir = /home/${USER}/rmm/api/tacticalrmm module = tacticalrmm.wsgi home = /home/${USER}/rmm/api/env master = true processes = 6 threads = 6 enable-threads = True socket = /home/${USER}/rmm/api/tacticalrmm/tacticalrmm.sock harakiri = 300 chmod-socket = 660 # clear environment on exit vacuum = true die-on-term = true max-requests = 500 max-requests-delta = 1000 EOF )" echo "${uwsgini}" > /home/${USER}/rmm/api/tacticalrmm/app.ini rmmservice="$(cat << EOF [Unit] Description=tacticalrmm uwsgi daemon After=network.target [Service] User=${USER} Group=www-data WorkingDirectory=/home/${USER}/rmm/api/tacticalrmm Environment="PATH=/home/${USER}/rmm/api/env/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" ExecStart=/home/${USER}/rmm/api/env/bin/uwsgi --ini app.ini Restart=always RestartSec=10s [Install] WantedBy=multi-user.target EOF )" echo "${rmmservice}" | sudo tee /etc/systemd/system/rmm.service > /dev/null nginxrmm="$(cat << EOF server_tokens off; upstream tacticalrmm { server unix:////home/${USER}/rmm/api/tacticalrmm/tacticalrmm.sock; } server { listen 80; server_name ${rmmdomain}; return 301 https://\$server_name\$request_uri; } server { listen 443 ssl; server_name ${rmmdomain}; client_max_body_size 300M; access_log /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/private/log/access.log; error_log /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/private/log/error.log; ssl_certificate /etc/letsencrypt/live/${rmmdomain}/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/${rmmdomain}/privkey.pem; ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256'; location /static/ { root /home/${USER}/rmm/api/tacticalrmm; } location /private/ { internal; add_header "Access-Control-Allow-Origin" "https://${frontenddomain}"; alias /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/private/; } location /saltscripts/ { internal; add_header "Access-Control-Allow-Origin" "https://${frontenddomain}"; alias /srv/salt/scripts/userdefined/; } location / { uwsgi_pass tacticalrmm; include /etc/nginx/uwsgi_params; uwsgi_read_timeout 9999s; uwsgi_ignore_client_abort on; } } EOF )" echo "${nginxrmm}" | sudo tee /etc/nginx/sites-available/rmm.conf > /dev/null nginxmesh="$(cat << EOF server { listen 80; server_name ${meshdomain}; location / { proxy_pass http://127.0.0.1:800; proxy_http_version 1.1; proxy_set_header X-Forwarded-Host \$host:\$server_port; proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto \$scheme; } } server { listen 443 ssl; proxy_send_timeout 330s; proxy_read_timeout 330s; server_name ${meshdomain}; ssl_certificate /etc/letsencrypt/live/${meshdomain}/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/${meshdomain}/privkey.pem; ssl_session_cache shared:WEBSSL:10m; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; location / { proxy_pass http://127.0.0.1:4430/; proxy_http_version 1.1; proxy_set_header Upgrade \$http_upgrade; proxy_set_header Connection "upgrade"; proxy_set_header X-Forwarded-Host \$host:\$server_port; proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto \$scheme; } } EOF )" echo "${nginxmesh}" | sudo tee /etc/nginx/sites-available/meshcentral.conf > /dev/null sudo ln -s /etc/nginx/sites-available/rmm.conf /etc/nginx/sites-enabled/rmm.conf sudo ln -s /etc/nginx/sites-available/meshcentral.conf /etc/nginx/sites-enabled/meshcentral.conf print_green 'Installing Salt Master' wget -O - https://repo.saltstack.com/py3/ubuntu/18.04/amd64/latest/SALTSTACK-GPG-KEY.pub | sudo apt-key add - echo 'deb http://repo.saltstack.com/py3/ubuntu/18.04/amd64/latest bionic main' | sudo tee /etc/apt/sources.list.d/saltstack.list sudo apt update sudo apt install -y salt-master saltvars="$(cat << EOF timeout: 60 gather_job_timeout: 30 max_event_size: 30485760 external_auth: pam: saltapi: - .* - '@runner' - '@wheel' - '@jobs' rest_cherrypy: port: 8123 disable_ssl: True max_request_body_size: 30485760 EOF )" echo "${saltvars}" | sudo tee --append /etc/salt/master > /dev/null print_green 'Waiting 30 seconds for salt to start' sleep 30 # wait for salt to start print_green 'Installing Salt API' sudo apt install -y salt-api sudo mkdir /etc/conf.d celeryservice="$(cat << EOF [Unit] Description=Celery Service After=network.target After=redis.service [Service] Type=forking User=${USER} Group=${USER} EnvironmentFile=/etc/conf.d/celery.conf WorkingDirectory=/home/${USER}/rmm/api/tacticalrmm ExecStart=/bin/sh -c '\${CELERY_BIN} multi start \${CELERYD_NODES} -A \${CELERY_APP} --pidfile=\${CELERYD_PID_FILE} --logfile=\${CELERYD_LOG_FILE} --loglevel=\${CELERYD_LOG_LEVEL} \${CELERYD_OPTS}' ExecStop=/bin/sh -c '\${CELERY_BIN} multi stopwait \${CELERYD_NODES} --pidfile=\${CELERYD_PID_FILE}' ExecReload=/bin/sh -c '\${CELERY_BIN} multi restart \${CELERYD_NODES} -A \${CELERY_APP} --pidfile=\${CELERYD_PID_FILE} --logfile=\${CELERYD_LOG_FILE} --loglevel=\${CELERYD_LOG_LEVEL} \${CELERYD_OPTS}' Restart=always RestartSec=10s [Install] WantedBy=multi-user.target EOF )" echo "${celeryservice}" | sudo tee /etc/systemd/system/celery.service > /dev/null celerywinupdatesvc="$(cat << EOF [Unit] Description=Celery Win Update Service After=network.target After=redis.service [Service] Type=forking User=${USER} Group=${USER} EnvironmentFile=/etc/conf.d/celery-winupdate.conf WorkingDirectory=/home/${USER}/rmm/api/tacticalrmm ExecStart=/bin/sh -c '\${CELERY_BIN} multi start \${CELERYD_NODES} -A \${CELERY_APP} --pidfile=\${CELERYD_PID_FILE} --logfile=\${CELERYD_LOG_FILE} --loglevel=\${CELERYD_LOG_LEVEL} -Q wupdate \${CELERYD_OPTS}' ExecStop=/bin/sh -c '\${CELERY_BIN} multi stopwait \${CELERYD_NODES} --pidfile=\${CELERYD_PID_FILE}' ExecReload=/bin/sh -c '\${CELERY_BIN} multi restart \${CELERYD_NODES} -A \${CELERY_APP} --pidfile=\${CELERYD_PID_FILE} --logfile=\${CELERYD_LOG_FILE} --loglevel=\${CELERYD_LOG_LEVEL} -Q wupdate \${CELERYD_OPTS}' Restart=always RestartSec=10s [Install] WantedBy=multi-user.target EOF )" echo "${celerywinupdatesvc}" | sudo tee /etc/systemd/system/celery-winupdate.service > /dev/null celeryconf="$(cat << EOF CELERYD_NODES="w1" CELERY_BIN="/home/${USER}/rmm/api/env/bin/celery" CELERY_APP="tacticalrmm" CELERYD_MULTI="multi" CELERYD_OPTS="--time-limit=2900 --autoscale=50,5" CELERYD_PID_FILE="/home/${USER}/rmm/api/tacticalrmm/%n.pid" CELERYD_LOG_FILE="/var/log/celery/%n%I.log" CELERYD_LOG_LEVEL="INFO" CELERYBEAT_PID_FILE="/home/${USER}/rmm/api/tacticalrmm/beat.pid" CELERYBEAT_LOG_FILE="/var/log/celery/beat.log" EOF )" echo "${celeryconf}" | sudo tee /etc/conf.d/celery.conf > /dev/null celerywinupdate="$(cat << EOF CELERYD_NODES="w2" CELERY_BIN="/home/${USER}/rmm/api/env/bin/celery" CELERY_APP="tacticalrmm" CELERYD_MULTI="multi" CELERYD_OPTS="--time-limit=4000 --autoscale=15,1" CELERYD_PID_FILE="/home/${USER}/rmm/api/tacticalrmm/%n.pid" CELERYD_LOG_FILE="/var/log/celery/%n%I.log" CELERYD_LOG_LEVEL="INFO" EOF )" echo "${celerywinupdate}" | sudo tee /etc/conf.d/celery-winupdate.conf > /dev/null celerybeatservice="$(cat << EOF [Unit] Description=Celery Beat Service After=network.target After=redis.service [Service] Type=simple User=${USER} Group=${USER} EnvironmentFile=/etc/conf.d/celery.conf WorkingDirectory=/home/${USER}/rmm/api/tacticalrmm ExecStart=/bin/sh -c '\${CELERY_BIN} beat -A \${CELERY_APP} --pidfile=\${CELERYBEAT_PID_FILE} --logfile=\${CELERYBEAT_LOG_FILE} --loglevel=\${CELERYD_LOG_LEVEL}' Restart=always RestartSec=10s [Install] WantedBy=multi-user.target EOF )" echo "${celerybeatservice}" | sudo tee /etc/systemd/system/celerybeat.service > /dev/null sudo mkdir -p /srv/salt sudo cp -r /home/${USER}/rmm/_modules /srv/salt/ sudo cp -r /home/${USER}/rmm/scripts /srv/salt/ sudo mkdir /srv/salt/scripts/userdefined sudo chown ${USER}:${USER} -R /srv/salt/ sudo chown ${USER}:www-data /srv/salt/scripts/userdefined sudo chmod 750 /srv/salt/scripts/userdefined meshservice="$(cat << EOF [Unit] Description=MeshCentral Server After=network.target After=nginx.service [Service] Type=simple LimitNOFILE=1000000 ExecStart=/usr/bin/node node_modules/meshcentral Environment=NODE_ENV=production WorkingDirectory=/meshcentral User=${USER} Group=${USER} Restart=always RestartSec=10s [Install] WantedBy=multi-user.target EOF )" echo "${meshservice}" | sudo tee /etc/systemd/system/meshcentral.service > /dev/null sudo systemctl daemon-reload sudo systemctl enable salt-master sudo systemctl enable salt-api sudo systemctl restart salt-api print_green 'Installing certbot' sudo add-apt-repository -y ppa:certbot/certbot sudo apt install -y certbot sudo systemctl stop nginx print_green 'Getting https certs' sudo certbot certonly --standalone --agree-tos -m ${letsemail} --no-eff-email -d ${meshdomain} sudo certbot certonly --standalone --agree-tos -m ${letsemail} --no-eff-email -d ${rmmdomain} sudo certbot certonly --standalone --agree-tos -m ${letsemail} --no-eff-email -d ${frontenddomain} sudo chown -R $USER:$GROUP /home/${USER}/.npm sudo chown -R $USER:$GROUP /home/${USER}/.config quasarenv="$(cat << EOF PROD_URL = "https://${rmmdomain}" DEV_URL = "https://api.example.com" APP_URL = "https://app.example.com" DEV_HOST = 0.0.0.0 DEV_PORT = 80 EOF )" echo "${quasarenv}" | tee /home/${USER}/rmm/web/.env > /dev/null print_green 'Installing the frontend' cd /home/${USER}/rmm/web npm install npm run build sudo mkdir -p /var/www/rmm sudo cp -pvr /home/${USER}/rmm/web/dist /var/www/rmm/ sudo chown www-data:www-data -R /var/www/rmm/dist nginxfrontend="$(cat << EOF server { server_name ${frontenddomain}; charset utf-8; location / { root /var/www/rmm/dist; try_files \$uri \$uri/ /index.html; add_header Cache-Control "no-store, no-cache, must-revalidate"; add_header Pragma "no-cache"; } error_log /var/log/nginx/frontend-error.log; access_log /var/log/nginx/frontend-access.log; listen 443 ssl; ssl_certificate /etc/letsencrypt/live/${frontenddomain}/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/${frontenddomain}/privkey.pem; ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256'; } server { if (\$host = ${frontenddomain}) { return 301 https://\$host\$request_uri; } listen 80; server_name ${frontenddomain}; return 404; } EOF )" echo "${nginxfrontend}" | sudo tee /etc/nginx/sites-available/frontend.conf > /dev/null sudo ln -s /etc/nginx/sites-available/frontend.conf /etc/nginx/sites-enabled/frontend.conf print_green 'Restarting Services' for i in nginx celery.service celery-winupdate.service celerybeat.service rmm.service do sudo systemctl enable ${i} sudo systemctl restart ${i} done sleep 5 sudo systemctl enable meshcentral print_green 'Restarting meshcentral and waiting for it to install plugins' sudo systemctl restart meshcentral sleep 30 print_green 'Generating meshcentral login token key' MESHTOKENKEY=$(node /meshcentral/node_modules/meshcentral --logintokenkey) meshtoken="$(cat << EOF MESH_TOKEN_KEY = "${MESHTOKENKEY}" EOF )" echo "${meshtoken}" | tee --append /home/${USER}/rmm/api/tacticalrmm/tacticalrmm/local_settings.py > /dev/null print_green 'Restarting all services' for i in nginx celery.service celery-winupdate.service celerybeat.service rmm.service meshcentral.service do sudo systemctl restart ${i} done print_green 'Restarting salt-master and waiting 30 seconds' sudo systemctl restart salt-master sleep 30 sudo systemctl restart salt-api printf >&2 "${YELLOW}%0.s*${NC}" {1..80} printf >&2 "\n\n" printf >&2 "${YELLOW}Installation complete!${NC}\n\n" printf >&2 "${YELLOW}Access your rmm at: ${GREEN}https://${frontenddomain}${NC}\n" printf >&2 "${YELLOW}Django admin url: ${GREEN}https://${rmmdomain}/${ADMINURL}${NC}\n\n" printf >&2 "${YELLOW}Please refer to the github README for next steps${NC}\n\n" printf >&2 "${YELLOW}%0.s*${NC}" {1..80} printf >&2 "\n"