command-line.md

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Pimp the command line

In this section, we are going to do instructions for changing the prompt "$" symbol to the Bitcoin symbol "₿" and color and install bash completion scripts for Bitcoin Core and Lightning projects command CLI instructions.

{% hint style="success" %} Difficulty: Easy {% endhint %}

Command prompt

You can prettify your command prompt for each user by enabling color output and setting a custom prompt

• With user admin, open and edit .bashrc as shown below. Save and exit

nano /home/admin/.bashrc --linenumbers

• Uncomment line 46

force_color_prompt=yes

• Comment the existing line 60 (backup)

#PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

• Add the next line (in line 61)

PS1="${debian_chroot:+($debian_chroot)}\[\e[33m\]\u@\h\[\033[01;34m\]\w\[\e[33m\] ₿\[\e[m\] "

• Insert the following at the end of the file

alias ls='ls -la --color=always'

• Apply changes

source /home/admin/.bashrc

Bash completion

• As user admin, install bash completion scripts for Bitcoin Core and LND. You then can complete partial commands by pressing the Tab key (e.g. bitcoin-cli getblockch [Tab] → bitcoin-cli getblockchaininfo)

cd /tmp/

wget https://raw.githubusercontent.com/bitcoin/bitcoin/master/contrib/completions/bash/bitcoind.bash

{% code overflow="wrap" %}

wget https://raw.githubusercontent.com/bitcoin/bitcoin/master/contrib/completions/bash/bitcoin-cli.bash

{% endcode %}

{% code overflow="wrap" %}

wget https://raw.githubusercontent.com/lightningnetwork/lnd/master/contrib/lncli.bash-completion

{% endcode %}

{% code overflow="wrap" %}

sudo mv bitcoind.bash bitcoin-cli.bash lncli.bash-completion /etc/bash_completion.d/

{% endcode %}

{% hint style="info" %} Bash completion will be enabled after your next login {% endhint %}