I created the file ~/.bash_aliases within these lines:
# my alias here
eclipse="eclipse</dev/null &>/dev/null &"
okular="okular</dev/null &>/dev/null &"
libre="libreoffice</dev/null &>/dev/null &"
My ~/.bashrc is ready to find aliases:
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
I then executed . ~/.basharc and also source .bashrc but aliases I created still don't work.