fetchlog: 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/fetchlog - from package: fetchlog

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

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