dasdisup: 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/dasdisup - from package: hercules

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

On Debian possible default full paths are:

/usr/bin/dasdisup - from package: hercules

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

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