rabbitvcs: 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/rabbitvcs - from package: rabbitvcs-cli

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

On Debian possible default full paths are:

/usr/bin/rabbitvcs - from package: rabbitvcs-cli

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

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