rmligs-german: 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/rmligs-german - from package: rmligs-german

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

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