Open for write permission denied ошибка передача файла потерпела неудачу

I’m on Windows client and I’m just starting to use FileZilla to SFTP local files on a remote server .. an Amazon EC2 instance running Ubuntu.

On my windows client I have Putty Pageant running as source of public keys.

Now the problem I’m having must be very basic .. «permission denied» leading to failed transfers

Error: /usr/lib/nx/nxsetup: open for write: permission denied
Error: File transfer failed

I right click the target server directory to check read/write permissionbs.

The directories in both source (localhost) and target (EC2 instance) can be navigated by FileZilla.

I tried to set attributes read/write for the entire target folder

but I get this ..

Status: Set permissions of ‘/usr/lib/nx’ to ‘777’
Command: cd «/usr/lib»
Response: New directory is: «/usr/lib»
Command: chmod 777 «nx»
Error: set attrs for /usr/lib/nx: permission denied

I have tried going to target server to change permissions of target folder /usr/lib/nx

sudo chmd +w /usr/lib/nx/

Also I’ve tried WinSCP but get identical errors ..

Cannot create remote file ‘/usr/lib/nx/nxsetup’

Permission denied
Error code: 3

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What is the basic configuration I’m missing just to transfer files from A to B using SFTP?

I’ve tried running FileZilla in administrator mode.

Is this probably a problem of permissions at the server end (Ubuntu) rather than in FileZilla?

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Here is a copy of the log file .. (EC2 path edited)

2011-11-14 21:00:53 3056 3 Status: Connecting to ec2-xx-xxx-xx-xxx.eu-west-1.compute.amazonaws.com…
2011-11-14 21:00:53 3056 3 Response: fzSftp started
2011-11-14 21:00:53 3056 3 Command: open «ubuntu@ec2-xx-xxx-xx-xxx.eu-west-1.compute.amazonaws.com» 22
2011-11-14 21:00:54 3056 3 Status: Connected to ec2-xx-xxx-xx-xxx.eu-west-1.compute.amazonaws.com
2011-11-14 21:00:54 3056 3 Status: Retrieving directory listing…
2011-11-14 21:00:54 3056 3 Command: pwd
2011-11-14 21:00:54 3056 3 Response: Current directory is: «/home/ubuntu»
2011-11-14 21:00:54 3056 3 Command: ls
2011-11-14 21:00:54 3056 3 Status: Listing directory /home/ubuntu
2011-11-14 21:00:54 3056 3 Status: Calculating timezone offset of server…
2011-11-14 21:00:54 3056 3 Command: mtime «.bashrc»
2011-11-14 21:00:54 3056 3 Response: 1317454718
2011-11-14 21:00:54 3056 3 Status: Timezone offsets: Server: 0 seconds. Local: 0 seconds. Difference: 0 seconds.
2011-11-14 21:00:54 3056 3 Status: Directory listing successful

You can make a test-directory and chmod this so everyone can read and write in it.

mkdir test 
chmod 777 test

Now you put a file in it with ftp and look what user and group needs access.

cd test
ls -l

Once you know username and group you either have to change ownership of the directories in which you want your ftp users to write or you can make the ftpuser part of the group who owns the directories.

chown :ftpgroup dir_to_write (you can add -R for recursive but do not do this on system dirs!)  

or:

adduser ftpuser group_who_owns_directory

If you only want to write to the html dir I would probably add the ftpuser to the html group so you do not get conflicts between the different processes on ownership.