sudo issue

[Ralf Mardorf]

On Tue, 02 Aug 2016 23:44:27 +1000, Karl Auer wrote:
>On Tue, 2016-08-02 at 23:00 +1000, blind Pete wrote:
>> You could probably pass the wild card, rather than what the 
>> wild card expands to (as Ralf), to sudo by escaping it.  
>> 
>>   $ sudo cp -rp /mnt/archlinux/.chuser/.home/.jwm\* /tmp/  
>
>Sadly no - because sudo does not execute the command in a shell, so
>arguments passed to it are not processed as a shell would.
>
>   kauer at kt:~$ sudo ls /root
>   z1.txt
>   kauer at kt:~$ sudo ls /root/z\*
>   ls: cannot access '/root/z*': No such file or directory

The only workaround for wilde card usage seems to be the shell.

I tried to imagine some workaround, comparable to the tee approach...

[weremouse at moonstudio ~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
ondemand
ondemand
[weremouse at moonstudio ~]$ sudo echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
bash: /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor: Permission denied
[weremouse at moonstudio ~]$ echo performance | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 
performance
[weremouse at moonstudio ~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance

...but for wilde card usage there seems to be no such workaround, resp.
an equivalent quasi is to run a shell.

Regards,
Ralf