corelist: 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/corelist - from package: perl-Module-CoreList

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

On Debian possible default full paths are:

/usr/bin/corelist - from package: libmodule-corelist-perl
/usr/bin/corelist - from package: perl

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

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