Bash ctrl+r Bash has a special “recall” mode you can use to search for commands you’ve previously run: Ctrl+R: Recall the last command matching the characters you provide. Press this shortcut and start typing to search your bash history for a command. Ctrl+O: Run a command you found with Ctrl+R. Ctrl+G: Leave history searching mode without running a command. keyboard-shortcuts-for-bash-command-shell
Systemd restart policy sometimes services die. sometimes there is not a better option because of the situatuion that you are in, and you just need to wait it out and then restart the service… I know it isn’t ideal and that there should be better ways around having to do this but hey ¯_(ツ)_/¯ [Service] Type=simple Restart=always RestartSec=3 ExecStart=/path/to/script In my case I needed to wait it out and restart the service 2 hours after it died....
Splunk HTTP collector python script Hey the http collector is awesome so let use it in python to send things to stuff… This is going to just take a dictionary as event data and then pass that to the http collector using only the request library . You will need to have a collector enabled for splunk and a token generated. #!/usr/bin/env python import time import requests import urllib3 ##turns off the warning that is generated below because using self signed ssl cert urllib3....
docker reboot Every once and a while for prem docker installation a reboot is needed. There are some tools out there that can most likely do this, but today a quick and dirty bash script solved the problem. Step one dump all the running container IDS, today there were about 23 containers running. docker ps -q >>ids Next reboot sudo reboot Finally the bash script to quickly spin them all back up....
bash ssh keys Good to remember if you have ssh keys setup the .ssh folder is 700 and the authorized_keys file is 644 SSH keys are a public and private key that you store on a host that you are going to ssh in to. This key allwos fo r aecure login without having to relay a password through the terminal. It is a more secure form of authentication that the basic username and password....
javascript and node No more just adding things to the package.json HA! To add an entry to your package.json's dependencies: npm install <package_name> --save To add an entry to your package.json's devDependencies: npm install <package_name> --save-dev version numbers and what they actually mean https://docs.npmjs.com/getting-started/semantic-versioning Patch releases: 1.0 or 1.0.x or ~1.0.4 Minor releases: 1 or 1.x or ^1.0.4 Major releases: * or x testing How fast can I fill in all the holes for TDD… not fast enough apparently ;)...