kdev_format_source: 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/kdev_format_source - from package: kdevplatform8-libs

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

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