fswatcher: 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/fswatcher - from package: gworkspace.app

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

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