mini-inetd: 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/mini-inetd - from package: tcputils

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

On Debian possible default full paths are:

/usr/bin/mini-inetd - from package: tcputils

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

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