delpart: 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:

/sbin/delpart - from package: util-linux-ng

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

On Debian possible default full paths are:

/usr/bin/delpart - from package: util-linux

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

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