ofono-phonesim: command not found

Have You tried accessing the binary with the full path?

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/ofono-phonesim - from package: ofono-phonesim

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