exifcom: 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/exifcom - from package: exiftags

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

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