hsqldb-sqltool: 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/hsqldb-sqltool - from package: hsqldb-utils

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

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