Ubuntu Clean old kernel images

Be VERY CAREFUL with this.   sudo dpkg -l ‘linux-*’ | sed ‘/^ii/!d;/'”$(uname -r | sed “s/\(.*\)-\([^0-9]\+\)/\1/”)”‘/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d’ | xargs sudo apt-get -y purge 😉 nJoy

Install latest influxdb on Ubuntu

curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add – source /etc/lsb-release echo “deb https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable” | sudo tee /etc/apt/sources.list.d/influxdb.list sudo apt-get update && sudo apt-get install influxdb sudo service influxdb start nJoy 😉  

PM2 set logs to compress and expire

Referring to the github README.md https://github.com/pm2-hive/pm2-logrotate pm2 install pm2-logrotate@2.6.0 pm2 set pm2-logrotate:compress true pm2 set pm2-logrotate:max_size 10M pm2 set pm2-logrotate:retain 7 pm2 conf { “pm2-logrotate”: { “max_size”: “10M”, “retain”: “7”, “compress”: “true”, “dateFormat”: “YYYY-MM-DD_HH-mm-ss”, “workerInterval”: “30”, “rotateInterval”: “0 0 * * *”, “rotateModule”: true }, “module-db”: { “pm2-logrotate”: { “uid”: null, “gid”: null } }…

Show all cronjobs for all users

This is a simple script to get all cronjbs for all users on a system for someone in $(cut -f1 -d: /etc/passwd); do echo $someone; crontab -u $someone -l ; done nJoy 😉  

incrond cannot exec process: No such file or directory

Inside you incrontabs, you must leave only 1 space between the . If you leave 2 or more spaces, then the 2nd (and more) spaces will be considered part of the or and it will fail… I was leaving 2 spaces between and , and incron did not work and in /var/log/syslog there were these…

Dummy node script to respond 200 (or anything) to a call for testing purposes

This is as bare a node App as you can make but it comes in handy when you want a . dummy server just to return 200s and or a JSON object at super fast speeds on small systems:   var express = require(‘express’); var app = express(); app.get(‘*’, function(req, res) { res.sendStatus(200); }); app.listen(‘3000’);…

Cool chkconfig replacement for Ubuntu

Hi,   Ubuntu does not carry chkconfig any more .. besides the standard update-rc.d apache2 defaults or update-rc.d apache2 remove There is a cool tool called : sysv-rc-conf. This tool can be installed using : sudo apt-get install sysv-rc-conf On its own the command opens a cool ncurses interface like this :      …

Reboot required Ubuntu

To find out what triggered this use : more /var/run/reboot-required.pkgs nJoy 😉