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--- project:single_boards [2016/05/25 22:43]
over23 [Project][Active][single_boards] : restore and backup SD card [defined for mac, but apply for linux simillary
+++ project:single_boards [2019/07/17 04:54] (current)
over23 [MacOSX install of Banana PI]
@@ Line 2: / Line 2: @@
 |**Interested:** | peterbay, [[user:overdrive|Overdrive]]|
 |**Related:**| |
+|**Reference:**| https://en.wikipedia.org/wiki/Banana_Pi |
 | **License:** | [[https://creativecommons.org/licenses/by-sa/3.0/|Uveďte původ-Zachovejte licenci; CC BY-SA]]  |
 {{ project:picka_small.jpg?300}}
@@ Line 54: / Line 55: @@
    * use nmap to find where you have Picka [or you can try to find it as next to bridge ip]
+   * Scan for every TCP and UDP open port:
+<code>
+sudo nmap -n -PN -sT -sU -p- remote_host
+</code>
 <code>
 SemioTex:Picka pavouk$ nmap 192.168.2.*
+### more extensive nmap: nmap -p0- -v -A -T4 192.168.1.*
 Starting Nmap 6.47 ( http://nmap.org ) at 2016-03-13 14:47 CET
 Nmap scan report for 192.168.2.2
@@ Line 87: / Line 92: @@
 sudo dd if=/dev/disk4 bs=1m | gzip > ~/1_Labka/banana_picka_25.5.2016.img.gz
 </code>
+====== example how to copy backup by scp ======
+======= copy to remote host =======
+<code>scp ~/1_Labka/banana_picka_25.5.2016.img.gz user@remotehost:/home/share/Picky_Backup/</code>
+======= copy to localhost =======
+<code>scp your_username@remotehost:/home/share/Picky_Backup/banana_picka_25.5.2016.img.gz /some/local/directory</code>
 ====== Restore ======
    * **remember, SD card should be unmounted**
 <code>
-# first check where SD card is mounted by
+# first check where SD card is visible, but not mounted by
 diskutil list
-# lets it be again /dev/disk4
+# let it be again /dev/disk4
 gzip -dc ~/1_Labka/banana_picka_25.5.2016.img.gz | sudo dd of=/dev/disk4 bs=1m
 </code>
@@ Line 109: / Line 123: @@
    touch ~/.ssh/authorized_keys
    chmod 600 ~/.ssh/authorized_keys
+==== example of generating key to non standard position ====
+<code>
+over@darkstar>mkdir ~/ssh_tmp
+ssh-keygen -t rsa -C "tpetru@gmail.com" -f ~/ssh_tmp/id_rsa_na_jine_misto
+Generating public/private rsa key pair.
+Enter passphrase (empty for no passphrase):
+Enter same passphrase again:
+Your identification has been saved in /home/over/ssh_tmp/id_rsa_na_jine_misto
+Your public key has been saved in /home/over/ssh_tmp/id_rsa_na_jine_misto.pub.
+The key fingerprint is:
+SHA256:hriECJShFg+8AKVHVkoqYtBknvhf/sGW+KQr4wqtEUE tpetru@gmail.com
+The key's randomart image is:
++---[RSA 2048]----+
+|=EX..            |
+|*%=o             |
+|@o*.             |
+|** . . .         |
+|o o o o S        |
+| o o + + .       |
+|o . o o *        |
+| +  o  * .       |
+|. .o.oo.o        |
++----[SHA256]-----+
+</code>
    nano ~/.ssh/authorized_keys <--- copy there public key generated somewhere
@@ Line 128: / Line 170: @@
 when able to connect by key, everything is fine
+==== create ~/.ssh/config for labka ====
+  touch ~/.ssh/config
+  chmod 110 ~/.ssh/config
+* add there this block of code; user needs to be correctly set up:
+<code>
+Host labka
+    user [SOME USER PICO]
+    hostname 193.84.207.21
+    ForwardX11 yes
+</code>
+* next time, you can connect to server by
+   ssh labka
+instead of
+   ssh [some_user]@193.84.207.21
+==== add user to wheel group [grant him sudo] ====
+   usermod -aG wheel username
 ===== Change colour of shell =====