sensible-editor: 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/sensible-editor - from package: sensible-utils

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

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