It isn't free/oss, but I use Editpad Lite & Editpad Pro for large files. Try the lite one before committing but I bought Pro after using lite for a while. Lite is free to use for non commercial uses. I wanted to support the developer and the search/replace feature makes it more than worth it. It is so handy - lets you replace CR's & tabs easily (hold shift + ENTER or SHIFT+Tab to place those characters in the search/replace text boxes).
Edit: Also, the Pro licensing is sane:
A single user EditPad Pro license allows you to install EditPad Pro on your PC(s) and on your USB stick(s) at the same time, as long as you are the only person using the computer(s) and USB stick(s) you have installed EditPad Pro on.
Try EditPad Lite. Just plain text, multi-tabbed text editor. No syntax highlighting but it does highlight URLs and email addresses.
I'm sure some programmer out there could semi-automate the process, by having an app create a secure shell to the linux box, dump a file with a few arguments, and spit out an image.png.
by repeating text strings, I mean creating a file in notepad (better if you use http://www.editpadlite.com/ -- something with the way linux handles new lines, and notepad's inability to properly create them)/
so, say you just ran this:
vagrant@data-science-toolbox:/vagrant/00p205$ python dreamify.py 000.jpg 001.png
...and you like the output, but the effect is kind of weak.
you repeat the command, but this time you type it all in a text editor, like this:
python dreamify.py 001.png 002.png; python dreamify.py 002.png 003.png; python dreamify.py 003.png 004.png; python dreamify.py 004.png 005.png; python dreamify.py 005.png 006.png; python dreamify.py 006.png 007.png; python dreamify.py 007.png 008.png
...then save it in the image-dreamer folder. give it a name like makemore.sh
You just created a script that tells linux to take the new ...001.png and run dreamify on that & put out a 002.png and then take 002.png and make it into 003.png (etc...) the semi-colon tells linux to wait until one line is done, then does the next line without you having to interact. If one image took 5minutes, the above command with 7 lines would take 35minutes
So now you can go back to the terminal and type this:
./makemore.sh [enter]
...come back later and see the new files -- each a bit more intense than the previous
I keep the log file open in a text editor that continually refreshes from disk as the log is updated. It's handy for quickly checking the log if you're experiencing any strange behavior in the game, especially cause I'm juggling lots of mods. Something like Editpad lite works good http://www.editpadlite.com/download.html
oh and the path to the game log should be something like this : \SteamLibrary\SteamApps\common\Cities_Skylines\Cities_Data\output_log.txt"