img2simg: 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/img2simg - from package: android-tools-fsutils

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

Error in other languages:
img2simg: bevel nie gevind nie
img2simg: comandă negăsită
img2simg: comando não encontrado
img2simg: commande introuvable
img2simg: command not found
img2simg: käsku ei ole
img2simg: không tìm thấy lệnh
img2simg: komanda nerasta
img2simg: Kommando nicht gefunden.
img2simg: kommandot finns inte
img2simg: komut yok
img2simg: nie znaleziono polecenia
img2simg: níor aimsíodh an t-ordú
img2simg: no se encontró la orden
img2simg: no s'ha trobat l'ordre
img2simg: opdracht niet gevonden
img2simg: parancs nem található
img2simg: perintah tidak ditemukan
img2simg: príkaz nenájdený
img2simg: příkaz nenalezen
img2simg: команда не найдена
img2simg: командата не е открита
img2simg: 命令找不到
img2simg: コマンドが見つかりません