LeakCheck: 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/LeakCheck - from package: leaktracer

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

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