lc: 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/lc - from package: mono-core

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

On Debian possible default full paths are:

/usr/bin/lc - from package: mono-devel

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

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