focuswriter: 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/focuswriter - from package: focuswriter

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

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