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There are a few ways to output the user ID (UID) with ps; a simple one is with -f: ps -fC X Will give you information for all the X servers that are running (there can be more than one). This presumes that the executable is called X -- if there's no such process, you will have to target something else. Since it almost certainly at least has capital X in ...


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The reason for EPERM (the permission denied error ) is here: drwxr-xr-x 5 www-data www-data 4096 juil. 30 13:47 . The directory where you are trying to create a file (in other words change contents of the directory-file) is writeable only for user www-data, which you are not. Either mark the directory as writeable for the group, change the user to ...


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Some older Unixes allowed to "give away" file ownership, but that has been abandoned long ago. In the days of true multiuser-boxes where hundreds of users connected through terminals to a unix machine, people learned to abuse this to get around their disk quotas. Moreover, giving away files is in some sense a form of social engineering, by which unwary ...



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