ctracer: 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/ctracer - from package: dwarves

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

On Debian possible default full paths are:

/usr/bin/ctracer - from package: dwarves

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

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