coverageBed: 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 CentOS possible default full paths are:

/usr/bin/coverageBed - from package: BEDTools

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/coverageBed - from package: BEDTools

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

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