nopaste-it: 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/bin/nopaste-it - from package: pnopaste-cli

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

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