F5 to Execute Your Program from Gedit – From Go to Python – Gedit External Tools

Gedit editor can run any command or script for you. Even though Gedit looks very simple, it’s easy to integrate Gedit to your own toolchains. Here is a simple script to execute your program by pressing F5. The script handles … Continue reading

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Send a Message to Logged in Users – wall, xwrited

You can send a message to logged in Linux users with ‘wall’ (write all). In the unlikely event you want to send a popup message to desktop user, it’s possible with xwrited and some setup. Users actually want to work … Continue reading

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Remotely Unlock Screensaver on Xubuntu Linux – sudo loginctl unlock-sessions

To unlock a locked Xubuntu Linux workstation, you can use ‘sudo loginctl unlock-sessions’ and alt-ctrl-F7. This command works over SSH and over Salt, but obviously it requires root access to target computer.

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Shorter Salt Ouput with –state-output terse

To get shorter output when configuring slaves with salt, use $ sudo salt ‘*’ state.highstate –state-output terse If you’re just getting started, you should install salt first. To get even cleaner output, you can get rid of useless warning.

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Quick Fix for Useless Salt Warning – Add "file_ignore_glob: []" to /etc/salt/master

Some versions of Salt give you a useless warning on every run. The problem is easy to fix.

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Run Salt SLS File Locally – sudo salt-call –local state.apply foo

What if I just want to run a single SLS file (salt state) once? Save your state to /srv/salt/foo.sls and apply it $ sudo salt-call –local state.apply foo This masterless setup is just for quick testing. In production, you would use … Continue reading

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200 Lines of Code Saves 20 000 EUR

My student Joram Puumala wrote a program to automatically configure routers. The CEO of NDC Networks, Markus Ahonen: “NDC is expecting to deliver over 5000 routers during 2018, so the calculable savings in direct effort are significant. Especially as handling … Continue reading

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Apply Puppet Resources Top Down – ordering=manifest – Order without Require

By default Puppet manifest ordering is arbitrary. You either have to use require a lot or apply your modules twice. But there is an easy fix: $ sudoedit /etc/puppet.conf [main] ordering = manifest # …

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pydoc3 str – Python Reference in Your Command Line – Airplane & Cottage Entertainment

You can read Python documentation offline with pydoc3. It’s installed automatically with Python, and it always shows documentation for the version of Python you have installed. $ pydoc3 str You can see reference for a library ‘pydoc3 re’ or a single … Continue reading

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Your JavaScript in Thunderbird – Manipulate Shown Email Contents with Developer Console

You can run Javascript interactively in Thunderbird. It containts a developer toolbox, similar to Firefox F12 console. In this short example, we change some text on the message being viewed. With Firefox, I have used similar content manipulation to fix … Continue reading

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