nemo: 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/nemo - from package: nemo

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

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