infokey: 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/infokey - from package: info

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

On Debian possible default full paths are:

/usr/bin/infokey - from package: info

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

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