taffybar: 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/taffybar - from package: taffybar

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