spatialite: 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

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/spatialite - from package: spatialite-bin

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