This article is for my entry to Pi Zero contest 2016.
https://hackaday.io/project/9526-bring-your-own-pizero-byop

directory and files

The directory and data files in the Raspberry PiZero are as follows.

Directory: /home/pi/BYOP
Files:
- name.txt : including your nick name
- send.txt : including messages to be sent
- rcvd.txt : including received messages

format of the files

name.txt

name.txt includes only your nick name in the format of [nick name].

name.txt

7of9

send.txt

send.txt includes multiple messages to be sent in the format: [reciever],[message],[isSecret].
Message including comment mark (//) will be ignored.

For example,

send.txt

//    1234567812345678 : to check length
Vital,hello_Vital,0<LF>
Vital,39formsg,0<LF>
Vital,47,1<LF>

about 47

rcvd.txt

rcvd.txt includes multiple messages, which has been received through the message station.
The format of the rcvd.txt is [sender],[date],[time],[message],[isSecret].
The datetime is the time when the sender store the message to the message station.

For example,

rcvd.txt

7of9,20160223,0650,morning,0<LF>
7of9,20160223,1230,sleepy,0<LF>
7of9,20160223,1930,bye,0<LF>
7of9,20160224,0620,6022,1<LF>