slopBed: 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/slopBed - from package: BEDTools

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

On Debian possible default full paths are:

/usr/bin/slopBed - from package: BEDTools

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

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