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sunshinecorp: sudo + chmod is harmless. you're just doing the chmod command with elevated permissions. you're correct in that most of the times it's not needed, but sometimes for various reasons the file isn't owned by the user and/or group so I habitually use it with sudo.
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dtgreene: Actually, sudo + chmod can do a lot of damage if you are not careful or make a typo.

Here is a command that will RUIN YOUR SYSTEM if run as root:
# chmod -R 777 /

If you want to try this command, load up a live CD in a virtual machine; do NOT try this on a system you care about. Recovering a system on which this command has been run is not easy, especially since sudo will no longer work.
HOW THE &$%^ would you mistype chmod +x filename.sh as chmod -r 777 / ... stop being a fearmonger. sudo is dangerous yes, but not for simple stuff like changing a file's permissions! It's exactly the same as you telling people not to do sudo apt-get update just in case they mistype it as sudo rm -rf / !!! By the way, whoever's reading this, never ever try that last command.
Post edited January 31, 2016 by sunshinecorp
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sunshinecorp:
Dude, calm down, he literally just said that!
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sunshinecorp:
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Emachine9643: Dude, calm down, he literally just said that!
RAAAAAAAAAAAAAAAAAAAAARGH
Thank you all for you replies, I now understand how the gog installations work in linux. I successfully installed and ran the lure of the temptress to my machine.

It looked like a nice game, until I spent literally two minutes being blocked by passerbys in the village before reaching the far end of the screen to talk to an npc. Long story short: uninstall and look for other old adventure games I missed in my days of youth.
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num18: Dear community,

I am trying to understand how the linux game executables from gog can be installed and run. I have been unable to find instructions on the site or google and became frustrated. I downloaded a test games (lure of the temptress) which was a single .sh file. I do not know what to do with this file, should I just mark it executable and run it? Do I need another executable (I have seen something like start.sh)? If so, where can I find that?

If I have missed some linux games FAQ or instructions, please redirect me to it. I have been searching for two days without luck. Thanks in advance!
Mentioning what distribution you're on might help but the easiest way would probably be to right click on the file, select properties, tick the "execute" box in the permissions tab, apply and then double click on the file to run it. Another simple way would be to open a terminal (usually ctrl+alt+T will do that or run it from the menu), navigate to the folder you downloaded the installer at using the cd command, then run "sudo chmod +x filename.sh" if you're on Ubuntu/Mint or Debian followed by "./filename.sh". Of course no quotes and change filename to the actual filename.

:)
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skeletonbow: snip
Where's my shotgun...
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num18: Thank you all for you replies, I now understand how the gog installations work in linux. I successfully installed and ran the lure of the temptress to my machine.

It looked like a nice game, until I spent literally two minutes being blocked by passerbys in the village before reaching the far end of the screen to talk to an npc. Long story short: uninstall and look for other old adventure games I missed in my days of youth.
From the free ones try... Teenagent.

If you haven't give it a try yet: Grim Fandango.

Other than that, can't help you much. Adventures are not my genre.
Ok so first right click on the SH file, then tick the "execute box" in the tab that say permissions. Then all you have to do is double click on it and it will start to install. Oh and if you mention what distro your on, it might be easier. You can also use the terminal to set read/write/execute privileges also :P
I would also recommend Lure of the Temptress. Simple and short game.
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num18: If I have missed some linux games FAQ or instructions, please redirect me to it. I have been searching for two days without luck. Thanks in advance!
For future reference:
GENERAL TROUBLESHOOTING FAQ - LINUX (UBUNTU & MINT) GAMES
I cannot run the .sh installer or start.sh file, help!