crudminer: command not found

Have You tried accessing the binary with the full path?

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/crudminer - from package: crudminer

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