scan-build-3.4: 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/scan-build-3.4 - from package: clang-3.4

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

Error in other languages:
scan-build-3.4: bevel nie gevind nie
scan-build-3.4: comandă negăsită
scan-build-3.4: comando não encontrado
scan-build-3.4: commande introuvable
scan-build-3.4: command not found
scan-build-3.4: käsku ei ole
scan-build-3.4: không tìm thấy lệnh
scan-build-3.4: komanda nerasta
scan-build-3.4: Kommando nicht gefunden.
scan-build-3.4: kommandot finns inte
scan-build-3.4: komut yok
scan-build-3.4: nie znaleziono polecenia
scan-build-3.4: níor aimsíodh an t-ordú
scan-build-3.4: no se encontró la orden
scan-build-3.4: no s'ha trobat l'ordre
scan-build-3.4: opdracht niet gevonden
scan-build-3.4: parancs nem található
scan-build-3.4: perintah tidak ditemukan
scan-build-3.4: príkaz nenájdený
scan-build-3.4: příkaz nenalezen
scan-build-3.4: команда не найдена
scan-build-3.4: командата не е открита
scan-build-3.4: 命令找不到
scan-build-3.4: コマンドが見つかりません