bzcmp: 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/bzcmp - from package: bzip2

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

On Debian possible default full paths are:

/bin/bzcmp - from package: bzip2

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

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