unigencircles: 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/unigencircles - from package: unifont-bin

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

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