simg2simg: 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/simg2simg - from package: android-tools-fsutils

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

Error in other languages:
simg2simg: bevel nie gevind nie
simg2simg: comandă negăsită
simg2simg: comando não encontrado
simg2simg: commande introuvable
simg2simg: command not found
simg2simg: käsku ei ole
simg2simg: không tìm thấy lệnh
simg2simg: komanda nerasta
simg2simg: Kommando nicht gefunden.
simg2simg: kommandot finns inte
simg2simg: komut yok
simg2simg: nie znaleziono polecenia
simg2simg: níor aimsíodh an t-ordú
simg2simg: no se encontró la orden
simg2simg: no s'ha trobat l'ordre
simg2simg: opdracht niet gevonden
simg2simg: parancs nem található
simg2simg: perintah tidak ditemukan
simg2simg: príkaz nenájdený
simg2simg: příkaz nenalezen
simg2simg: команда не найдена
simg2simg: командата не е открита
simg2simg: 命令找不到
simg2simg: コマンドが見つかりません