cvanal: 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/cvanal - from package: csound-utils

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

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