linux .bashrc

# General Aliases
    alias apk='apk --progress'
    alias ll="ls -ltan"

    alias hosts='cat /etc/hosts'
    alias ..="cd .."
    alias ...="cd ../.."
    alias ....="cd ../../.."
    alias untar="tar xzvkf"
    alias mv="mv -nv"
    alias cp="cp -i"
    alias ip4="ip -4 addr"
    alias ip6="ip -6 addr"

    COL_YEL="\[\e[1;33m\]"
    COL_GRA="\[\e[0;37m\]"
    COL_WHI="\[\e[1;37m\]"
    COL_GRE="\[\e[1;32m\]"
    COL_RED="\[\e[1;31m\]"

    # Bash Prompt
    if test "$UID" -eq 0 ; then
        _COL_USER=$COL_RED
        _p=" #"
    else
        _COL_USER=$COL_GRE 
        _p=">"
    fi
    COLORIZED_PROMPT="${_COL_USER}\u${COL_WHI}@${COL_YEL}\h${COL_WHI}:\w${_p} \[\e[m\]"
    case $TERM in
        *term | rxvt | screen )
            PS1="${COLORIZED_PROMPT}\[\e]0;\u@\h:\w\007\]" ;;
        linux )
            PS1="${COLORIZED_PROMPT}" ;;
        * ) 
            PS1="\u@\h:\w${_p} " ;;
    esac

存股

https://www.youtube.com/watch?v=uqlUFvkyEUg

1. 折舊長 不能折舊短 代表長期經營
2. 能控制供應 多或少，像蘋果 有強大的控制供應能力，需求多不見得
3. 產品周期長

hyperledger leader peer endorsing peer committing peer

leader peer 是peer之間動態選舉選出的

endorsing peer 預設為每個peer都是，安裝chaincode後，實例化設定policy可以有變化

committing peer 預設為每個peer都是

https://medium.com/@kctheservant/transactions-in-hyperledger-fabric-50e068dda8a9
https://stackoverflow.com/questions/52893818/difference-between-endorsing-peer-and-committing-peer-in-hyperledger-fabric/52894994