calligraconverter: 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/calligraconverter - from package: calligra-libs

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

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