gtkhash: 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/gtkhash - from package: gtkhash

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

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