bzip2recover: 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/bzip2recover - from package: bzip2

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

On Debian possible default full paths are:

/bin/bzip2recover - from package: bzip2

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

Error in other languages:
bzip2recover: bevel nie gevind nie
bzip2recover: comandă negăsită
bzip2recover: comando não encontrado
bzip2recover: commande introuvable
bzip2recover: command not found
bzip2recover: käsku ei ole
bzip2recover: không tìm thấy lệnh
bzip2recover: komanda nerasta
bzip2recover: Kommando nicht gefunden.
bzip2recover: kommandot finns inte
bzip2recover: komut yok
bzip2recover: nie znaleziono polecenia
bzip2recover: níor aimsíodh an t-ordú
bzip2recover: no se encontró la orden
bzip2recover: no s'ha trobat l'ordre
bzip2recover: opdracht niet gevonden
bzip2recover: parancs nem található
bzip2recover: perintah tidak ditemukan
bzip2recover: príkaz nenájdený
bzip2recover: příkaz nenalezen
bzip2recover: команда не найдена
bzip2recover: командата не е открита
bzip2recover: 命令找不到
bzip2recover: コマンドが見つかりません