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hai guys ,
i am having problem in getting the knowledge about umask. actually when i am putting command as umask some value is coming like 0022 by defalut. we can change its value also. but the main thing is thye file permisiion actually depends upon umask.how is it depends upon umask i want to know. if i will change the value of umask file permisiion value is also getting changed. so plz help me out on this issue of umask. and how the calculation is really going on. replay ASAP |
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Did you try to, like, look for documentation?
umask - Wikipedia, the free encyclopedia When a file is created, the program which creates it requests a permission mask. This mask gets ANDed with the compliment of the umask, and the file is created with the resulting permissions. |
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but the main thing is is there any specification is that we have to keep the umask value as 022 or anything else. so here by changing the value of umask we can chnage the file permisiion also.so no need to use chmod command.if we will get the shortcut solution about the calculation of umask we can come to know how is it really possible. so just help me out to know better details regartding this umask. and if we want to change the permisiion of all the files we can do it by using one command of umask or not. so plz help me out quickly |
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without this we can do or not |
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If you were not allowed to change it under any circumstances, it ought to be impossible. But you can. However, you should be aware of the security implications. If you set it too loose, people will be creating private files in their home directories which are readable by anyone -- if that's acceptable then go ahead. (Setting it tighter than the default is usually not a problem.)
Sounds like you might be barking up the wrong tree, though. Could you describe what problem you are trying to solve? If you want files in a shared directory to be created with specific permissions, maybe your platform would offer a facility for this by other means (for example, by using the setgid bit on the directory, on some platforms). |
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