exiftime: 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/exiftime - from package: exiftags

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

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