geoiplookup_continent: 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/geoiplookup_continent - from package: mirrorbrain-tools

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

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