perlthanks: 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/perlthanks - from package: perl

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

On Debian possible default full paths are:

/usr/bin/perlthanks - from package: perl

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

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