harminv: 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/harminv - from package: harminv

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