nsperm.so: 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 Debian possible default full paths are:

/usr/lib/aolserver4/bin/nsperm.so - from package: aolserver4-daemon

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

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