reposd: 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/sbin/reposd - from package: sblim-gather

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

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