tsxs: 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/tsxs - from package: trafficserver-devel

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

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