seroute: 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 Debian possible default full paths are:

/usr/bin/seroute - from package: alliance

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

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