solarpowerlog: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/solarpowerlog - from package: solarpowerlog

You may install the required package with command apt-get install {package}

Error in other languages:
solarpowerlog: bevel nie gevind nie
solarpowerlog: comandă negăsită
solarpowerlog: comando não encontrado
solarpowerlog: commande introuvable
solarpowerlog: command not found
solarpowerlog: käsku ei ole
solarpowerlog: không tìm thấy lệnh
solarpowerlog: komanda nerasta
solarpowerlog: Kommando nicht gefunden.
solarpowerlog: kommandot finns inte
solarpowerlog: komut yok
solarpowerlog: nie znaleziono polecenia
solarpowerlog: níor aimsíodh an t-ordú
solarpowerlog: no se encontró la orden
solarpowerlog: no s'ha trobat l'ordre
solarpowerlog: opdracht niet gevonden
solarpowerlog: parancs nem található
solarpowerlog: perintah tidak ditemukan
solarpowerlog: príkaz nenájdený
solarpowerlog: příkaz nenalezen
solarpowerlog: команда не найдена
solarpowerlog: командата не е открита
solarpowerlog: 命令找不到
solarpowerlog: コマンドが見つかりません