dconf-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/dconf-editor - from package: dconf-editor

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

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