dmalloc: 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/dmalloc - from package: libdmalloc-dev

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

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