accept: 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/accept - from package: cups

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

On Debian possible default full paths are:

/usr/sbin/accept - from package: cups-client

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

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