dchroot: 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/dchroot - from package: dchroot

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

On Debian possible default full paths are:

/usr/bin/dchroot - from package: dchroot

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

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