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Topic: chmod help please(solved) (Read 225 times)

ukbrian
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chmod help please(solved)
« Thread Started on Dec 30, 2011, 1:46pm »

Twice now I have ended up with my USB being taken over by root(permissions etc)

Could some kind person out with a step by step guide to using chmod in the terminal to make the permissions normal again.

I have tried RTFM with the man pages and google but I'm to old and thick to understand them.

I will add another node to the linux syntax section of CherryPad so I wont bother you again. I'm a cut/paste merchant really

« Last Edit: Dec 30, 2011, 4:32pm by ukbrian »

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petrek
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Re: chmod help please
« Reply #1 on Dec 30, 2011, 3:15pm »

If you want to set ownership of files you use chown and chgrp. For example, if your USB is mounted under /mnt/usb and your username is ukbrian you run:

Code:
chown -R ukbrian /mnt/usb

Code:
chgrp -R ukbrian /mnt/usb

This will set you as owner(and your group) of every file on this usb.

Setting permisions looks like this:

Code:
chmod nnn pathtofile

where n is a number from 0 to 7. First n is for owner of file, second n is for his group, and third is for everybody else. 1 is for executing, 2 is for writing, and 4 is for reading. For example if you want to set reading and writing for owner of file only, you just add two numbers for it, so it will be 2+4=6 and put it on the first place

Code:
chmod 600 pathtofile

« Last Edit: Dec 30, 2011, 3:27pm by petrek »

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Skallagrigg

ukbrian
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Re: chmod help please
« Reply #2 on Dec 30, 2011, 3:50pm »

Thank you, very much appreciated, love your art work

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petrek
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Re: chmod help please(solved)
« Reply #3 on Dec 31, 2011, 1:42pm »

Thank you

There is also other way for setting permissions, if you want add only executing bit for yourself you write:

Code:
chmod o+x pathtofile

Cheers and Happy New Year

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Skallagrigg

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