fedmsg-collectd: 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/fedmsg-collectd - from package: fedmsg-collectd
/usr/bin/fedmsg-collectd - from package: fedmsg

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

On Debian possible default full paths are:

/usr/bin/fedmsg-collectd - from package: fedmsg

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

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