isenkram-pkginstall: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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 Debian possible default full paths are:

/usr/sbin/isenkram-pkginstall - from package: isenkram-cli

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