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Modification of files with 777 permissions but not with 755 permissions?

In Unix , we have a file permissions which can be changed with chmod command . But applying the permissions are always confusable for beginners . If anyone can explain it with the simple terms , would be very useful.

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marked as duplicate by BinaryMisfit Sep 9 '09 at 10:25

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Closed as duplicate since the answer points to the duplicate – BinaryMisfit Sep 9 '09 at 10:25

2 Answers 2

up vote 1 down vote accepted

I gave a somewhat detailed explanation here. This page is also very in depth, I recommend you give it a read.

Now that I think about it, a permissions calculator was the first program I made with a GUI. I'll try to find it.

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i made already one – ukanth Sep 9 '09 at 3:25
Nice, a gadget too! Mines a bit smaller :) brings back memories. – John T Sep 9 '09 at 3:52
@John T This seems to be some sort of ".exe" file. file reports it is for something called "MS Windows". – Richard Hoskins Sep 9 '09 at 4:51
Yeah any GUI programs I made when starting out were for Windows. I didn't know much about toolkits like Qt and programming even a simple "Hello World" for X was a painstaking process. – John T Sep 9 '09 at 5:01
Your answer on that previous question pretty much sums this question up as a dupe. – random Sep 9 '09 at 6:41

Use the famous Online CHMOD Calculator, it works great and is VERY interactive:

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