clinfo: 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 Debian possible default full paths are:

/usr/bin/clinfo - from package: clinfo

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

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