faxinfo: 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/faxinfo - from package: hylafax+-client

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

On Debian possible default full paths are:

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

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

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