bundlelinks.old: 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.old - from package: circos-tools

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

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