writetmp: 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/writetmp - from package: sac

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

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