genxs: 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/genxs - from package: mono-devel

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

On Debian possible default full paths are:

/usr/bin/genxs - from package: mono-devel

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

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