fastaq_split_by_base_count: 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/fastaq_split_by_base_count - from package: fastaq

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

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