lfc-ls: 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/lfc-ls - from package: lfc

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

On Debian possible default full paths are:

/usr/bin/lfc-ls - from package: lfc

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

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