[TriLUG] Ubuntu 16.04 - /proc delete directories not permitted

[Tim Jowers via TriLUG]

/proc is one of the most awesome things about Linux!


On Sun, Jul 10, 2016 at 9:35 AM, Joseph Mack NA3T via TriLUG <
trilug at trilug.org> wrote:

> On Sun, 10 Jul 2016, mr-trilug via TriLUG wrote:
>
> I ran a backup script I believe had worked before.
>> Result was /proc filled directories and subdirectories.
>>
>
> I'm not sure what you did.
>
> I assume you backed up /proc and now have large files in your backup, that
> you can't delete. I don't know why you can't delete the backups of /proc.
>
> If this isn't what you did, then I'll have to wait to find out what really
> happened.
>
> However you don't need to backup anything in /proc. /proc contains files
> generated by the kernel. There used to be a file (I think /proc/mem) that
> was the same size as your RAM. I think if you backed it up, you would get
> an image of your memory. You only need backup the directory /proc, which is
> a mountpoint for the proc filesystem.
>
> Joe
>
> Most with 41 directories/files.
>> Permissions are typically  -rw-r--r--. Owner:Group = root:root.
>> using cli for just one  such directory:
>>     "/proc$ sudo rm -rf  1/sm*
>>     [sudo] password for mver:
>>     rm: cannot remove '1/smaps': Permission denied"
>>
>> There are 131071 Gb of directories/files there in /proc most of it
>> nonsense
>> Attempts to  sudo chown mver:mver/ or sudo chmod 0555 or 0777 fail to
>> change anything (although the -v parm suggests that the changes are been
>> attempted but not permitted.
>>
>> The problem started with:
>>
>> "sudo tar -cpzf bkupUb16.04-${dt}.tar.gz --exclude='bkupUb'*
>> --exclude='/home' --exclude='/media'  --exclude='/mnt' --exclude='/tmp'
>> --one-file-system / home"  where $dt was a date string.
>>
>> Your thoughts?
>> With thanks, Mike R.
>>
>>
>>
> --
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) austintek (dot) com - azimuthal equidistant
> map generator at http://www.wm7d.net/azproj.shtml
> Homepage http://www.austintek.com/ It's GNU/Linux!
>
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