nmapsi4-logr: 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/nmapsi4-logr - from package: nmapsi4

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

Error in other languages:
nmapsi4-logr: bevel nie gevind nie
nmapsi4-logr: comandă negăsită
nmapsi4-logr: comando não encontrado
nmapsi4-logr: commande introuvable
nmapsi4-logr: command not found
nmapsi4-logr: käsku ei ole
nmapsi4-logr: không tìm thấy lệnh
nmapsi4-logr: komanda nerasta
nmapsi4-logr: Kommando nicht gefunden.
nmapsi4-logr: kommandot finns inte
nmapsi4-logr: komut yok
nmapsi4-logr: nie znaleziono polecenia
nmapsi4-logr: níor aimsíodh an t-ordú
nmapsi4-logr: no se encontró la orden
nmapsi4-logr: no s'ha trobat l'ordre
nmapsi4-logr: opdracht niet gevonden
nmapsi4-logr: parancs nem található
nmapsi4-logr: perintah tidak ditemukan
nmapsi4-logr: príkaz nenájdený
nmapsi4-logr: příkaz nenalezen
nmapsi4-logr: команда не найдена
nmapsi4-logr: командата не е открита
nmapsi4-logr: 命令找不到
nmapsi4-logr: コマンドが見つかりません