nxbrowse: command not found

Have You tried accessing the binary with the full path?

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/nxbrowse - from package: nexus-tools

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