lbzcat: 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/lbzcat - from package: lbzip2

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

On Debian possible default full paths are:

/usr/bin/lbzcat - from package: lbzip2

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

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