alias e='gvim ~/.bashrc'
alias s='source ~/.bashrc'
alias eg='gvim ~/.vimrc'

#******************** set prompt ********************
free_mem()
{
    free -m | awk 'NR==2{printf "%.2fG", $4/1024}'
}
w5(){
    current_dir=$(pwd)
    IFS='/' read -r -a dir_array <<< "$current_dir"
    array_length=${#dir_array[@]}
    if [ $array_length -gt 5 ]; then
        start_index=$((array_length - 5))
        short_path="/"
        for (( i=$start_index; i<$array_length; i++ )); do
            short_path+="${dir_array[i]}/"
        done
        echo "${short_path%?}"
    else
        echo "$current_dir"
    fi
}

export PS1="[\[\e[01;32m\]\u@\h\[\e[00m\]-\t \$(free_mem)]:\[\e[01;34m\]\$(w5)\[\e[00m\]\$ "