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zpl1025 How to Setup lftp - A Simple Command line FTP Program
Hi everyone, this article is about Lftp and how we can install Lftp in our Linux Operating System. Lftp is a command line based File Transfer Software also known as FTP Client which was developed by Alexander Lukyanov and was distributed as GNU General Public License. Besides FTP, it also supports FTPS, HTTP, HTTPS, HFTP, FISH, and SFTP. The program also supports FXP, allowing for data transfers between two FTP servers bypassing the client machine.
It has some awesome advanced features such as recursively mirroring entire directory trees and resuming downloads. Transfers can be scheduled for execution at a later time, bandwidth can be throttled, transfer queues can be created, and Unix shell-like job control is supported. The client can also be used interactively or automated with scripts.
Installing Lftp
Before we try to run lftp, we have make sure that it is properly installed in our Linux Distribution. Here are some commands mentioned for installing lftp in the list common distribution of Linux.
On Ubuntu 14.04 LTS
In Ubuntu 14.04 LTS and its derivatives, we can install lftp using apt manager. So, to install it, we'll need to run the following commands in a shell or a terminal under sudo privilege.
$ sudo apt-get install lftp
On CentOS/Fedora/RHEL
As lftp is also available in the repository of Fedora, CentOS and RHEL, we can use yum manager to install it.
$ sudo yum install lftp
On Arch Linux
It is also available in Arch Linux Package Repository so, we can simply use pacman to install it.
$ sudo pacman -S lftp
On OpenSuse
Zypper, package management software for OpenSuse can be used to install lftp. Here is the command with which one can install it on their OpenSuse machine.
$ sudo zypper install lftp
Logging in
To login to a ftp server or sftp server, we'll first need to know about the required credential for the login like username, password, ports.
After that, we'll want to login using lftp client as basic usage.
$ lftp ftp://linoxide@localhost
If we need to point a port to the login then, we'll need to add port as shown below.
$ lftp ftp://linoxide@localhost:21
Navigation
We can use ls to list files and directories, cd to enter into a directory.
Uploading and Download Files
We can use pget for downloading files from the remote server.
> pget linspeed.svg
We can use put for uploading files to the remote server.
> put linoxide.tar
To resume partially downloaded files/directories, we will use the -c switch:
> mirror -c Directory
>pget -c linoxide.tar
> put -c upload.tar
Using Mirror
We can use mirror to download the whole directory pointed as the source.
> mirror remote local
There is also reverse mirror (mirror -R) which uploads or updates a directory tree on server.
> mirror -R local remote
To resume partially downloaded files/directories, we will use the -c switch:
> mirror -c Directory
To Queue Items to Download
We can use queue option with lftp so that we can download selected files in a queue one by one as there is an option in GUI based clients to select and download in a queue. Here's an example on it.
To prevent queue from auto transferring while you add to it :
> queue stop
Now, we'll add them into queue.
> queue mirror "directory"
> queue pget "file.tar"
After the queue has been added, we should run queue start command.
> queue start
To remove the entire queue run the following command.
> queue -d
Segmented Downloading
Here, in this example we are segmenting files into 3 segments, one can change it according to their own need.
A pget command using segmentation is pget -n 3 file.tar, where 3 is the number of segments.
> pget -n 3 file.tar
A mirror command using segmentation is mirror --use-pget-n=3 directory, where 3 is the number of segments.
> mirror --use-pget-n=3 linxoxide
We can use jobs -v to see the speeds of the individual segments as well as the total speed.
To Stop, Resume or Kill a Transfer
To cancel a transfer we can press Ctrl+c . And to resume a download we can use the -c (--continue) switch as shown below.
> mirror -c directory
And to kill an active transfer we should run kill and to kill and delete all we'll need to run kill all as shown below.
> kill
> kill all
Exiting
To quit from lftp, we should run exit command in the terminal or inside lftp interface.
> exit
Conclusion
Hurray! We have successfully installed lftp and learned some basic major ways to use it. lftp is an awesome command line ftp client which supports a lot of additional functionality and cool features. It has a lot stuffs more than the other common ftp client. So, if you have any questions, suggestions, feedback please write them in the comment box below. Thank you ! Enjoy lftp :-)
via: http://linoxide.com/linux-how-to/setup-lftp-command-line-ftp/
作者：Arun Pyasi 译者：译者ID 校对：校对者ID