Restrict users access to only their home directory in vsftp

If you want to restrict FTP users to have access only their home directory but not outside of their own directory. You have to setup chroot.

1. open vsftpd configuration file
$ vi /etc/vsftpd/vsftpd.conf

2. Uncomment the below line
$ chroot_local_user=YES

3. Save and close the file. Restart vsftpd.
$ /etc/init.d/vsftpd restart




As a result FTP users can't access directories other than their home.

$ ftp> cd /home

550 Failed to change directory.

Thats it.

copy/move/delete files using xargs

How to move/copy/delete largest 15 files to a particular directory

Go to the user directory
$ cd /home/user

If you want to move them, use this below command

$ ls -s|sort -n|tail -15|awk '{print $2}'|while read f;do mv "$f" /backup;done

Explanation:

ls -s - prints size of each file

sort -n - sort files

tail -15 - 15 largest files

awk '{print $2}' - cut the filename

while loop moves files to /backup directory

If you want to delete them, use this below command

$ ls -s|sort -n|tail -15|awk '{print $2}'|while read f;do rm "$f";done

If you want to copy them, use this below command

$ ls -s|sort -n|tail -15|awk '{print $2}'|while read f;do cp "$f" /backup;done

Fix files and folder permission on linux

For files:

find . -type f -exec chmod 644 {} \;

For dirs:

find . -type d -exec chmod 755 {} \;

wget recursive download using ftp

wget recursive download using ftp 

$ wget -r ftp://username:password@ip.of.old.host

If you get error like:

$ wget -r ftp://ftp:M8cf#5GP@xx.xx.xx.xx
  ftp://ftp//:M8cf#5GP@xx.xx.xx.xx: Bad port number.

however if you remove special characters like #,$ and ? from the password than the same will work fine.


wget recursive ftp with mirroring option

wget -m ftp://username:Password@ftp.example.com

assign multiple shared IPs in WHM

You can add more shared IPs by following the steps shown below.

cd /var/cpanel/mainips

If there is no such directory, create it.

mkdir -p /var/cpanel/mainips

vi /var/cpanel/mainips/root

Add the current main shared IP and the secondary ip.

cat /var/cpanel/mainips/root
11.22.33.44
44.33.22.11

Go to WHM » IP Functions » Show/Edit Reserved IPs

You can see the status of new IPs as 'Main/shared IP for root'.

That's it :)