nss-addbuiltin: 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/bin/nss-addbuiltin - from package: libnss3-tools

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