apertium-deswxml: 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/apertium-deswxml - from package: apertium

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

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