hedgewars: 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/lib/hedgewars/bin/hedgewars - from package: hedgewars

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

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