rotate: 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/rotate - from package: jigl

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

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