pbput: 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
/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/pbput - from package: pastebinit

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