randomBed: 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/randomBed - from package: BEDTools

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

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