bundlelinks: 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/share/circos/tools/bundlelinks/bin/bundlelinks - from package: circos-tools

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

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