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sudo and expansion

 
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# 1  
Old 01-21-2009
sudo and expansion
Hi there,
Can anyone explain me the following behavior?
Code:
hfserver:~# ls -l /home/cronlogs/mysqldump*
-rw-r--r-- 1 root root 10658464 2009-01-18 03:00 /home/cronlogs/mysqldump_20090118030002
-rw-r--r-- 1 root root 10651035 2009-01-19 03:00 /home/cronlogs/mysqldump_20090119030001
-rw-r--r-- 1 root root 10662462 2009-01-20 03:00 /home/cronlogs/mysqldump_20090120030001
-rw-r--r-- 1 root root 10680731 2009-01-21 03:00 /home/cronlogs/mysqldump_20090121030001

santiago@hfserver:~$ sudo ls -l /home/cronlogs/mysqldump*
ls: /home/cronlogs/mysqldump*: No such file or directory

When logged as root, I can display the files matching the pattern but when using sudo, it fails.
Important to mention, /home/cronlogs can only be read by root :
Code:
hfserver:~# ls -l /home
drwx------ 2 root     root     12288 2009-01-21 15:24 cronlogs

But sudo is root so why does it fail?

Thanks for your help
Santiago
# 2  
Old 01-21-2009
The problem is that not ls does the parameter expansion but the shell. But since cronlogs isn't readable by your user, the shell can't expand.
# 3  
Old 01-21-2009
Thanks for the explanation, I think I understand.
So how can I sudo this command without having to log as root?
# 4  
Old 01-22-2009
Try sudo 'bash -c "ls -l /home/cronlogs/mysqldump*"'
Substitute bash with a shell of your choice if necessary
# 5  
Old 01-22-2009
Thanks pludi.
It works but I had to remove the quotes around bash command:
Code:
sudo bash -c 'ls -l /home/cronlogs/mysqldump*'

 
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