Why does the lftp mirror command chmod files - ftp

I'm very new to lftp, so forgive my ignorance.
I just ran a dry run of my lftp script, which consists basically of a line like this:
mirror -Rv -x regexp --only-existing --only-newer --dry-run /local/root/dir /remote/dir
When it prints what it's going to do, it wants to chmod a bunch of files - files which I grabbed from svn, never modified, and which should be identical to the ones on the server.
My local machine is Ubuntu, and the remote is a Windows server. I have a few questions:
Why is it trying to do that? Does it try to match file permissions from the local with the remote?
What will happen when it tries to chmod the files? As I understand it, Windows doesn't support chmod - will it just fail gracefully and leave the files alone?
Many thanks!

Use the -p option and it shouldn't try to change permissions. I've never sent to a windows host, but you are correct in that it shouldn't do anything to the permission levels on the windows box.

I think that you should try
lftp -e "mirror -R $localPath $remotePath; chmod -R 777 $remotePath; bye" -u $username,$password $host

Related

Commands without sudo in bash do not work

I am running a bash script and these commands in the script will not work without sudo in front of them. The script.sh is located in a folder such as /jobs/script.sh
Example of commands I am trying to run in the script.sh -
mv /var/app/myapp /var/app/myapp.old
rm file.tar.gz
tar -xzf /home/ubuntu/file.tar.gz -C /var/app/
All the above work if I add sudo in front of them.
I am trying to figure out what permissions are required for them to work without adding sudo in the script.
I have tried giving the script.sh rwx permissions and changing owner to root.
I'm learning permissions in linux, so I'm new to this. Basically what permission should the script.sh have so that I dont have to use sudo in the bash file? Any insight would greatly help.
When you run sudo <some command>, then <some command> is run by the root user (Super user do). The reason you might need to run any command using sudo is because the permissions on the files that command reads/writes/executes are such that only the "Super user" (root) has that permission.
When executing the command mv fileA fileB, the executing user would need:
Write permission to fileB if fileB already existed
Write permission to the directory containing fileB
From what you said it’s most likely you want read and write permissions you can achieve this with chmod
Chmod +[permission] filename
(+ is used to add permission you can also use - instead to remove it)
Where permissions can be:
r —> read
w—> write
x —>excecute
... and more
FOR EXAMPLE: it seems you write permissions for the first file so :
chmod +w /var/app/myapp
Will fix problem

Bash Script Cant Write To Log Files

I've created a simple bash script that grabs some data and then outputs it to a log file. When I run the script without sudo it fails to write to the logs and says they are write-protected. It then ask me if it should unwrite-protect them, but this fails (permission denied).
If I run the script as sudo it appears to work without issue. How can I set these log file to be available to the script?
cd /home/pi/scripts/powermonitor/
python /home/pi/powermonitor/plugpower.py > plug.log
echo -e "$(sed '1d' /home/pi/scripts/powermonitor/plug.log)\n" > plug.log
sed 's/^.\{139\}//' plug.log > plug1.log
rm plug.log
grep -o -E '[0-9]+' plug1.log > plug.log
rm plug1.log
sed -n '1p' plug.log > plug1.log
rm plug.log
perl -pe '
I was being dumb. I just needed to set the write permissions on the log files.
The ability to write a file depends on the file permissions that have been assigned to that file or, if the file does not exist but you want to create a new file, then the permissions on the directory in which you want to write the file. If you use sudo, then you are temporarily becoming the root user, and the root user can read/write/execute any file at all without restriction.
If you run your script first using sudo and the script ends up creating a file, that file is probably going to be owned by the root user and will not be writable by your typical user. If you run your script without using sudo, then it's going to run under the username you used to connect to the machine and that user will need to have permission to write the log files.
You can change the ownership and permissions of directories and files by using the chown, chmod, chgrp commands. If you want to always run your script as sudo, then you don't have much to worry about. If you want to run these commands without sudo, that means you're running them as some other user and you will need to grant write permission to that user, whoever it is, in order to write the files/folders where the log files get written.
For instance, if I wanted to run the script as user sneakyimp and wanted the files written to /home/sneakyimp/logs/ then I'd need to make sure that directory was writable by sneakyimp:
sudo chown -R sneakyimp:sneakyimp /home/sneakyimp/logs
This command changes ownership of that directory and its contents to the user sneakyimp. You might also need to run some chmod commands to make sure they are writable by owner.

Get permission to work with files on my Amazon EC2 Ubuntu server using FTP-WinSCP

I have an Ubuntu server on Amazon, I installed everything for working with it (php, mysql, phpmyadmin, apache..), The problem is that I cant move around or edit files using the FTP.
I get the error message:
Permission denied.
Error code: 3
Error message from server: Permission denied
from my WINSCP.
The only way I can trancefer/edit file is using 'putty' with the sudo/nano command.
I found a lot of information about this on google, but there are no updated soulution I can find. Linux isn't my usual work-space.
How do I get the permissions working for the WINSCP ?
A lot of answers say to change permissions on /var/www/ ... however AWS shortcuts out of the WWW folder and into the /var/app/current/ directory. If all else fails try:
sudo chown -R -v ec2-user /var/app/current/
On Ubuntu image in AWS, default user is ubuntu. Instead of using system folders like /var/... better to use /home/your_folder. Then change the ownership using {chown} command. For eg.
$ sudo chown -R -v ubuntu /home/your_folder/
This will change the ownership of 'your_folder' and contents inside it from 'root' user to 'ubuntu'. Then Winscp should be able to upload/delete/create files using SFTP/FTP etc..
I had the same issues. The solution is: You can solve this by changing WordPress ownership type:
sudo chown -R www-data:ubuntu /var/www/wordpress
Then, Change the right permission for the particular files and directories, type command
sudo find /var/www/wordpress/ -type d -exec chmod 755 {} \;
sudo find /var/www/wordpress/ -type f -exec chmod 644 {} \;
Apart from this, set the following important files to chmod 600 so that only the owner can fully read and write access to these files:
sudo chmod 600 /var/www/wordpress/wp-config.php
sudo chmod 600 /var/www/wordpress/.htaccess
Then everything will work. You will be able to access your wordpress files
for me using free tier from cloud providers will not give you root access, to fix this you have to change folder permission from SSH or try this solution
OS: windows 10 Pro
Open WinSCP instead of SFTP you select SCP go to advance settings click on SCP/Shell and change the shell option to sudo su -
Now you will be able to get permission.
Change file permision by command chmod 777 /var/app/current/ and transfer files to the directory

modify file content

I'm installing a lighttpd server on a remote machine using a bash script. After installation, I need to configure the port for the server. The system says I don't have permission to modify the file /etc/lighttpd/lighttpd.conf even though I do
sudo echo "server.bind=2000" >> /etc/lighttpd/lighttpd.conf
How shall I modify this?
What you're doing is running echo as root, then trying to append its output to the config file as the normal user.
What you want is sudo sh -c 'echo "server.bind=2000" >> /etc/lighttpd/lighttpd.conf'
Try to change the file permission using chmod
$ sudo chmod a+x /etc/lighttpd/lighttpd.conf
If you don't have the right to change the file /etc/lighttpd/lighttpd.conf check the man page of lighthttpd. If you can start it with a different config file, then create a config file somewhere and start lighthttpd with it.
The problem is that the bit on the right of >> is not run under sudo. Either use sudo -i to bring up a root shell a superuser and run the command, or just use an editor as mentioned before.

chmod syntax in FTP-Client on all subdirectories

Which ftp client or which syntax allows easy chmod for sub-directories?
LFTP allows for recursive CHMOD if the client allows it. You can accomplish this by logging in with LFTP from a Unix/Linux CLI and then run the following:
chmod -R 0755 /www/directory/*
You could also setup a real nifty Bash script for this:
#!/bin/bash
lftp <<EOF
set ftp:ssl-allow no
set ftp:passive-mode true
set ftp:list-options -a
open -u [user],[password] [host]
chmod -R 0777 /www/directory/*
EOF
Of course LFTP does not distinguish between files and folders, for running this command on only files/folders respectively I would suggest using FileZilla. It allows this when running the command on a folder.
I'm pretty sure Filezilla does it
ncftp will support the chmod command if the FTP Server supports it.
As the answer from #Ken G suggests, this is more likely to be a question of "what does the FTP server support".
I tried ncftp (running under Cygwin on Win XP) against Sun FTP running on Solaris 10 (where chmod -R is supported by the o/s version of chmod). I got an error back:
ncftp /work1/jleffler/tmp > chmod -R g+x *
chmod g+x: server said: 'SITE CHMOD -R g+x': command not understood.
chmod *: server said: 'SITE CHMOD -R xx.pl': command not understood.
ncftp /work1/jleffler/tmp >
My suspicion is that few if any systems make it easy. It would be worth checking out whether the NCFTP server helps you.
To chmod all subdirs from where you are (recursive):
chmod -R *
chmod -R 755 {DIR}
You recurse with -R

Resources