lxc-info: 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/lxc-info - from package: lxc

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

On Debian possible default full paths are:

/usr/bin/lxc-info - from package: lxc

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