rmd160: 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/sbin/rmd160 - from package: hashalot

You may install the required package with command apt-get install {package}
Error in other languages:
rmd160: bevel nie gevind nie
rmd160: comandă negăsită
rmd160: comando não encontrado
rmd160: commande introuvable
rmd160: command not found
rmd160: käsku ei ole
rmd160: không tìm thấy lệnh
rmd160: komanda nerasta
rmd160: Kommando nicht gefunden.
rmd160: kommandot finns inte
rmd160: komut yok
rmd160: nie znaleziono polecenia
rmd160: níor aimsíodh an t-ordú
rmd160: no se encontró la orden
rmd160: no s'ha trobat l'ordre
rmd160: opdracht niet gevonden
rmd160: parancs nem található
rmd160: perintah tidak ditemukan
rmd160: príkaz nenájdený
rmd160: příkaz nenalezen
rmd160: команда не найдена
rmd160: командата не е открита
rmd160: 命令找不到
rmd160: コマンドが見つかりません