latencytop-tui: 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/sbin/latencytop-tui - from package: latencytop-tui

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

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