lsx: 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 Debian possible default full paths are:

/usr/bin/lsx - from package: suckless-tools

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

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