clamconf: 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/clamconf - from package: clamd

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

On Debian possible default full paths are:

/usr/bin/clamconf - from package: clamav-daemon

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

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