faxqclean: 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/sbin/faxqclean - from package: hylafax+

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

On Debian possible default full paths are:

/usr/sbin/faxqclean - from package: hylafax-server

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

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