memccp: 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/memccp - from package: libmemcached-tools

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

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