editconf: 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/editconf - from package: gromacs

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

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