ngspice2genspic: 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/ngspice2genspic - from package: chiark-scripts

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

Error in other languages:
ngspice2genspic: bevel nie gevind nie
ngspice2genspic: comandă negăsită
ngspice2genspic: comando não encontrado
ngspice2genspic: commande introuvable
ngspice2genspic: command not found
ngspice2genspic: käsku ei ole
ngspice2genspic: không tìm thấy lệnh
ngspice2genspic: komanda nerasta
ngspice2genspic: Kommando nicht gefunden.
ngspice2genspic: kommandot finns inte
ngspice2genspic: komut yok
ngspice2genspic: nie znaleziono polecenia
ngspice2genspic: níor aimsíodh an t-ordú
ngspice2genspic: no se encontró la orden
ngspice2genspic: no s'ha trobat l'ordre
ngspice2genspic: opdracht niet gevonden
ngspice2genspic: parancs nem található
ngspice2genspic: perintah tidak ditemukan
ngspice2genspic: príkaz nenájdený
ngspice2genspic: příkaz nenalezen
ngspice2genspic: команда не найдена
ngspice2genspic: командата не е открита
ngspice2genspic: 命令找不到
ngspice2genspic: コマンドが見つかりません