findspl: 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
/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/findspl - from package: ncbi-tools-bin

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