swapiness

Brian Cluff brian at snaptek.com
Tue Jan 5 13:12:57 MST 2016


They both work, however the second one is simpler and all fits on one 
line.  The << eof method is best used when you have multiple lines you 
want to add to a file or when you have a bunch of characters what you 
would otherwise need to escape.

Brian Cluff

On 01/05/2016 12:03 PM, Michael Havens wrote:
> so my other  command:
>
> #adjust where pictures are stored
> sudo cat >> /etc/fstab << eof
> /media/bmike1/entertainment/Pictures /home/bmike1/Pictures none bind 0 0
> eof
>
> should be:
>
> echo /media/bmike1/entertainment/Pictures /home/bmike1/Pictures none 
> bind 0 0  >>/etc/fstab
>
> ????
>
> On Tue, Jan 5, 2016 at 1:55 PM, Brian Cluff <brian at snaptek.com 
> <mailto:brian at snaptek.com>> wrote:
>
>     You are trying to write "vm.swappiness=10" directly to the
>     swappiness settings.
>     If that is what you are trying to do, do it like this:
>
>     echo 10 >/proc/sys/vm/swappiness
>
>     I suspect that what you really want to do is write it to a config
>     file so that it is automatically set every time you boot.  In that
>     case do:
>
>     echo vm.swappiness=10 >/etc/sysctl.d/99-swappiness.conf
>     sysctl -p /etc/sysctl.d/99-swappiness.conf
>
>     The last line just loads the settings, you could also just reboot.
>
>     Brian Cluff
>
>
>     On 01/05/2016 11:26 AM, Michael Havens wrote:
>>     I have a small copy n paste txt file for when my hard drive fails
>>     (hopefully in the distant future) so I can get my new hard drive
>>     up and running again as closely similar to the previous drive as
>>     possible.
>>     I made the one command up myself and just discovered it does not
>>     work. That command is:
>>       # Reduce the swap tendency
>>       cat >> /proc/sys/vm/swappiness <<eof
>>       > vm.swappiness=10
>>       eof
>>
>>     with the error of:
>>
>>        cat: write error: Invalid argument
>>
>>     I have a similar
>>
>>       sudo cat >> /etc/fstab << eof
>>       /media/bmike1/entertainment/Pictures /home/bmike1/Pictures none
>>     bind 0 0
>>       eof
>>
>>     which I do not believe was implemented  correctly as when I
>>     inspect 'mount' there does not appear to be the entertainment
>>     directory or pictures directories listed anywhere. So I suppose
>>     it is wrong then....
>>
>>
>>     -- 
>>     :-)~MIKE~(-:
>>
>>
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>
> -- 
> :-)~MIKE~(-:
>
>
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