sisu-sqlite: 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/sisu-sqlite - from package: sisu-sqlite

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

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