cifscreds: 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/cifscreds - from package: cifs-utils

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

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