trace-cmd: 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/trace-cmd - from package: trace-cmd

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

On Debian possible default full paths are:

/usr/bin/trace-cmd - from package: trace-cmd

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

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