go-ethereum/docs/_interface/Bash-Autocomplete.md

title	sort_key
Bash Autocomplete	C

You can enable autocompletion in geth just running a bash script (Linux/MacOS) or a powershell script (Windows).

Linux/MacOS

1. Create a bash script file with the content below and save as geth-autocompletion anywhere in your computer (i.e. /bin/geth-autocompletion):

   #! /bin/bash
   
   : ${PROG:=$(basename ${BASH_SOURCE})}
   
   _cli_bash_autocomplete() {
   if [[ "${COMP_WORDS[0]}" != "source" ]]; then
       local cur opts base
       COMPREPLY=()
       cur="${COMP_WORDS[COMP_CWORD]}"
       if [[ "$cur" == "-"* ]]; then
       opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} ${cur} --generate-bash-completion )
       else
       opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} --generate-bash-completion )
       fi
       COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
       return 0
   fi
   }
   
   complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete $PROG
   unset PROG
   

2. Open and edit your startup script depending on the terminal in use (i.e. ~/.bashrc or ~/.zshrc).

3. Includes this command in the final of your startup script:

   # i.e. PROG=geth source /bin/geth-autocompletion
   PROG=geth source /path/to/autocomplete/geth-autocompletion-script
   

Windows

1. Create a powershell script file with the content below and save as geth.ps1 anywhere in your computer.

   $fn = $($MyInvocation.MyCommand.Name)
   $name = $fn -replace "(.*)\.ps1$", '$1'
   Register-ArgumentCompleter -Native -CommandName $name -ScriptBlock {
       param($commandName, $wordToComplete, $cursorPosition)
       $other = "$wordToComplete --generate-bash-completion"
           Invoke-Expression $other | ForEach-Object {
               [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
           }
   }
   

2. Open the PowerShell profile (code $profile or notepad $profile) and add the line:

   & path/to/autocomplete/geth.ps1