sdate: 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/sdate - from package: sdate

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

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