kmtrace: 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 CentOS possible default full paths are:

/usr/bin/kmtrace - from package: kdesdk

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/kmtrace - from package: kmtrace

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

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