Source : https://github.com/schollz/croc
Download :
https://www.qnapclub.eu/fr/qpkg/780
About :
command line to easily and securely send things from one computer to another
croc is a tool that allows any two computers to simply and securely transfer files and folders. AFAIK, croc is the only CLI file-transfer tool does all of the following:
allows any two computers to transfer data (using a relay)
provides end-to-end encryption (using PAKE)
enables easy cross-platform transfers (Windows, Linux, Mac)
allows multiple file transfers
allows resuming transfers that are interrupted
does not require a server or port-forwarding
Usage
To send a file, simply do:
$ croc send [file(s)-or-folder]
Sending 'file-or-folder' (X MB)
Code is: code-phrase
Then to receive the file (or folder) on another computer, you can just do
$ croc code-phrase
The code phrase is used to establish password-authenticated key agreement (PAKE) which generates a secret key for the sender and recipient to use for end-to-end encryption.
There are a number of configurable options (see --help). A set of options (like custom relay, ports, and code phrase) can be set using --remember.
Custom code phrase
You can send with your own code phrase (must be more than 4 characters).
$ croc send --code [code-phrase] [file(s)-or-folder]
Use pipes - stdin and stdout
You can pipe to croc:
$ cat [filename] | croc send
In this case croc will automatically use the stdin data and send and assign a filename like "croc-stdin-123456789". To receive to stdout at you can always just use the --yes will automatically approve the transfer and pipe it out to stdout.
$ croc --yes [code-phrase] > out
All of the other text printed to the console is going to stderr so it will not interfere with the message going to stdout.
Self-host relay
The relay is needed to staple the parallel incoming and outgoing connections. By default, croc uses a public relay but you can also run your own relay:
$ croc relay
Make sure to open up TCP ports (see croc relay --help for which ports to open).
You can send files using your relay by entering --relay to change the relay that you are using if you want to custom host your own.
$ croc --relay "myrelay.example.com:9009" send [filename]
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