larswm: 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/larswm - from package: larswm

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

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