sfind: 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/sfind - from package: shapetools

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

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