toast: 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 CentOS possible default full paths are:

/usr/bin/toast - from package: gsm-tools

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/toast - from package: libgsm-tools

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

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