sawfish-client: command not found

Have You tried accessing the binary with the full path?

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/sawfish-client - from package: sawfish

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