YAMAHAのルータは、tftpコマンドを用いることにより、configやluaファイルの送信・取得が行なえます。
unix系OSの良いところは、簡単はコマンドは一行で行えることです。
手元にあるubuntu22.04 LTSではtftpが一行で実施できないので、atftpを導入してみました。
atfp導入の記録。
$ sudo apt-get install atftp
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically installed and are no longer required:
libflashrom1 libftdi1-2 libgnutls-openssl27 libsecret-1-0 libsecret-common
libsecret-tools
Use 'sudo apt autoremove' to remove them.
The following NEW packages will be installed:
atftp
0 upgraded, 1 newly installed, 0 to remove and 61 not upgraded.
Need to get 32.2 kB of archives.
After this operation, 99.3 kB of additional disk space will be used.
Get:1 http://jp.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 atftp amd64 0.7.git20210915-4build1 [32.2 kB]
Fetched 32.2 kB in 1s (35.5 kB/s)
Selecting previously unselected package atftp.
(Reading database ... 120495 files and directories currently installed.)
Preparing to unpack .../atftp_0.7.git20210915-4build1_amd64.deb ...
Unpacking atftp (0.7.git20210915-4build1) ...
Setting up atftp (0.7.git20210915-4build1) ...
Processing triggers for man-db (2.10.2-1) ...
Scanning processes...
Scanning candidates...
Scanning processor microcode...
Scanning linux images...
The processor microcode seems to be up-to-date.
Restarting services...
Service restarts being deferred:
systemctl restart NetworkManager.service
systemctl restart networkd-dispatcher.service
systemctl restart unattended-upgrades.service
No containers need to be restarted.
No user sessions are running outdated binaries.
No VM guests are running outdated hypervisor (qemu) binaries on this host.
atftp にてファイルを取得・送信するコマンド（ワンライナー）
# ルータからファイルを取得
atftp ルータIP -g -r /sample.lua -l /tmp/sample.lua
# ルータへファイルを送信
atftp ルータIP -p -r /sample.lua -l ./sample.lua
atftp 使い方
$ atftp --help
Usage: tftp [options] [host] [port]
[options] may be:
-g, --get : get file
--mget : get file using mtftp
-p, --put : put file
-l, --local-file <file> : local file name
-r, --remote-file <file> : remote file name
-P, --password <password>: specify password (Linksys extension)
--tftp-timeout <value> : delay before retransmission, client side
--option <"name value"> : set option name to value
--mtftp <"name value"> : set mtftp variable to value
--no-source-port-checking: violate RFC, see man page
--prevent-sas : prevent Sorcerer's Apprentice Syndrome
--verbose : set verbose mode on
--trace : set trace mode on
-V, --version : print version information
-h, --help : print this help
[host] is the tftp server name
[port] is the port to useリンク
リンク