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Old 01-05-2005, 08:25 PM   #1
ServerStorm
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Chown command giving invalid user


Hi I am attempting to configure squirrelmail. I have followed these steps:

1) downloaded tar
2) extracted tar; cd to extracted tar's director; made attachments dir; and attempt to reassign ownership using chown.

Code:
tar xzvf squirrelmail-1.4.3.a.tar.gz
cd squirrelmail-14.3a
mkdir attachments
chown -R www-data data attachments

[I] Error is thrown: 

chown: 'www-data'  : invalid user
When I looked in chown --help this appears to be formated ok. One thing that I am not sure of is wether or not www-data has to be an existing linux user. If so I am not sure how to determine whether it is or is not?

I have performed many chown commands in the last day or so and all with success so I can't understand why this is failing?

Your help in determining why this might be failing is greatly appreciated.

Last edited by ServerStorm; 01-05-2005 at 08:28 PM.
 
Old 01-05-2005, 08:33 PM   #2
Psyddicus
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I believe that your user 'www-data' doesn't yet exist if you're getting that error (a user has to exist to own something). I'm not familiar with the app you're setting up, but I suppose you could just create the user www-data on your own and then give him the folders in question.
 
Old 01-05-2005, 08:54 PM   #3
ServerStorm
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Thanks Psyddicus

This makes sense. In all other cases where I used Chown I needed to create the user first. In this instance I was copying code directly as a step by step and so I assumed that an earlier script in this step by step created the required users. Thinking about it I should have been able to come to this on my own, so thanks for asking a somewhat silly question!

Truly,
ServerStorm
 
Old 01-05-2005, 08:59 PM   #4
Psyddicus
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More than glad to help, I've done similar stuff myself quite a few times in the past. Sometimes you get so caught up in what you're doing that you forget about the easier stuff.
 
Old 03-23-2010, 02:33 AM   #5
zeuss86
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Question chown - invalid user

here is the thing:
in my /etc/passwd file, I can see my user:

Code:
[root@hamed]# cat /etc/passwd
eyvazian:x:1011:1011:System User for eyvazian:/home/eyvazian/:/sbin/nologin
but when I run chown I get the following error:
Code:
[root@hamed]# chown /home/eyvazian/ eyvazian
chown: `./-24.php': invalid user
any suggestions ?
 
Old 03-23-2010, 02:37 AM   #6
Sayan Acharjee
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Quote:
Originally Posted by zeuss86 View Post
here is the thing:
in my /etc/passwd file, I can see my user:

Code:
[root@hamed]# cat /etc/passwd
eyvazian:x:1011:1011:System User for eyvazian:/home/eyvazian/:/sbin/nologin
but when I run chown I get the following error:
Code:
[root@hamed]# chown /home/eyvazian/ eyvazian
chown: `./-24.php': invalid user
any suggestions ?
The command you are executing is wrong, try this:
Quote:
#chown eyvazian /home/eyvazian/
 
Old 03-23-2010, 02:42 AM   #7
catkin
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Quote:
Originally Posted by zeuss86 View Post
any suggestions ?
Better you give chown the user before the file.
Code:
c@CW8:~$ chown --help
Usage: chown [OPTION]... [OWNER][:[GROUP]] FILE...
  or:  chown [OPTION]... --reference=RFILE FILE...
EDIT: sayan_acharjee got there first
 
  


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