autocutsel: 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/autocutsel - from package: autocutsel

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