quicksynergy: 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/quicksynergy - from package: quicksynergy

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

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