tlp-pcilist: 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/tlp-pcilist - from package: tlp

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

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