akonaditest: 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/akonaditest - from package: kdepimlibs5-dev

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

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