mkstatic: 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/mkstatic - from package: emboss-explorer

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