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I have created different users and set their home directories to particular folders. I have limited the users' access other than their directories. How could I limit users from writing data?

Peter Mortensen
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Dipak
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  • Write data to where? – Naveen Jun 04 '14 at 14:02
  • it just storing data may be i create file or any thing that consumes disk space – Dipak Jun 04 '14 at 14:06
  • Not allowing writing data in their own HOME directory will break their login (files need to be written in /home/$USER by the system with the user name. UNLESS we are talking about ftp I would not touch /HOME/$USER – Rinzwind Jun 04 '14 at 14:06
  • Rinzwind, it's not that big of a deal. Not every file needs to be kept writeable. As long as files are still kept readable to the user, all works out fine. – mmstick Jun 04 '14 at 14:10
  • i don,t want to restrict writing data in their own HOME directory , i want they just able to write in home directory with limited data size @Rinzwind – Dipak Jun 04 '14 at 14:12
  • Your question makes no sense to me. Please try to explain with an example. – Naveen Jun 04 '14 at 14:13
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    It sounds like the question is about user/group disk quotas – steeldriver Jun 04 '14 at 14:13
  • Naveen, his question makes perfect sense if you understand English. – mmstick Jun 04 '14 at 14:14
  • +1 steeldriver. Yes that sounds like a disk quota thing. @mmstick no it is not. – Rinzwind Jun 04 '14 at 14:17
  • Thanks steeldriver , I am not having any knowledge about user/group disk quotas , but how can it will be useful to me @steeldriver – Dipak Jun 04 '14 at 14:18
  • @Dipak the link above points to this http://www.thegeekstuff.com/2010/07/disk-quota/ and it explains how to set up a partition with limited disc space per user. – Rinzwind Jun 04 '14 at 14:19
  • @Rinzwind it seems to be i need to install quota and modify /etc/fstab and reboot system. i want to add user at run time using scripts as per need , and i am not reboot system because it will break other users from uploading data to their directories – Dipak Jun 04 '14 at 14:26

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See the chmod and chown command using man. You can modify files and directories so that they belong to root and are not writeable by anyone other than root, for example.

Example (as root): chown root:root file

mmstick
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