fedmsg-config: 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-config - from package: fedmsg

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

On Debian possible default full paths are:

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

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

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