textconv: 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/textconv - from package: liballegro4-dev

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

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