Thank you very much. I am so very sorry if my issue is being a little confusing. In fact I need to change the header files of a program that I installed on this system. They arent files that could potentially harm my system at all. Its a visualizer software. All I need is to change a few numbers on the header file for scaling purposes. It wont really cause any problem on the system that is why its not a bad idea at all. I just dont get why the file appears to be "read-only" to me. Before, I used to make changes on this header file without any problem. So this is something completely new. All I need is to know why I lost the permission and how can I again fix the problem. Because I realized its not only for this header file that my permission fails but also its any other file I open I dont have permission to make changes on it!
On Thu, Jul 8, 2010 at 9:13 PM, Matthew Holland <mdholl...@ucdavis.edu>wrote: > You need to learn about UNIX permissions. There is no reason you > shouldn't be able to change the permissions on the file with sudo > commands. As Jeff suggested, there are plenty of reasons why this may > not be a good thing to do, but it could be fine. No one can really > tell from what you have told us whether it's in the Very Bad Idea > category, or not. If this header belongs to the system (e.g., it's in > /usr/include or /Library, or pretty much anywhere but /Users), then > modifying it is probably not a good idea. > > You should read the man pages for "chown" and "chmod" and read about > UNIX permissions in general. If the user that you are logged in as is > an administrator, you should be able to change the ownership of the > file with a command like: > > $ sudo chown file username > > where "file" is the name of the file, and "username" is the name of > the user to whom you want to transfer ownership of the file. It's > possible that the file is still read-only at this point, depending on > the file permissions. If so, and you really want to do this, you can > issue a command like > > $ chmod u+w file > > Keep in mind that a little knowledge can be dangerous, and think > clearly about what you're doing before you change the ownership or > permissions of any file owned by root. Usually there is a good reason > for root ownership. This is probably why you haven't received a lot > of help, because no one wants to help you break system-owned files. > > Matt > > On Thu, Jul 8, 2010 at 8:54 PM, Anahita Yazdi <atya...@ucdavis.edu> wrote: > > I need to make changes on a header file but the file is read only for me. > I > > need to enable the root user account. How would I be able to do that? > > > > On Thu, Jul 8, 2010 at 8:09 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us > > > > wrote: > >> > >> In order to obtain more detailed help you must provide a more detailed > >> question. > >> > >> "Anahita Yazdi" <atya...@ucdavis.edu> wrote: > >> > >> >I am confused then so what should I do to overcome the problem. I will > >> >really be appreciated for more detailed help please > >> >Thanks a lot > >> >Anahita > >> > > >> >On Thu, Jul 8, 2010 at 5:26 PM, Jeff Newmiller > >> > <jdnew...@dcn.davis.ca.us>wrote: > >> > > >> >> Sounds to me like the file is read-only and I would strongly > encourage > >> >> you > >> >> to desist in your attempts to modify it. You are very unlikely to > >> >> obtain the > >> >> results you desire by making such a change. > >> >> > >> >> "Anahita Yazdi" <atya...@ucdavis.edu> wrote: > >> >> > >> >> >Hi, > >> >> >I am working on a Mac OS X 10.6.2, I installed a software program > >> >> > through > >> >> >terminal and wanted to change some details on one of its header > files > >> >> >(extension *.h) however I am getting a permission denied error in > >> >> > terminal > >> >> >when I open it as a "vi" file. I tried "sudo" but it is still not > >> >> > working. > >> >> >It is a file that is apparently owned by the root. I tried to > >> >> disable/enable > >> >> >the root on this system from apple's official discussion page but > the > >> >> option > >> >> >"edit" in "Open Directory Utility" is missing. Where else would I be > >> >> > able > >> >> to > >> >> >perform such task on my system? > >> >> >Thanks a bunch, > >> >> >Anahita > >> >> >_______________________________________________ > >> >> >vox-tech mailing list > >> >> >vox-tech@lists.lugod.org > >> >> >http://lists.lugod.org/mailman/listinfo/vox-tech > >> >> > >> >> > >> >> > --------------------------------------------------------------------------- > >> >> Jeff Newmiller The ..... ..... Go > >> >> Live... > >> >> DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. > Live > >> >> Go... > >> >> Live: OO#.. 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