openbsd-cwm: 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/openbsd-cwm - from package: cwm

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

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