笔记：Docker命令自动补全

一背景

作为一名 Linux 重度用户，每次敲命令总会情不自禁地按下 Tab 键。在键入 Docker 命令时也会出现类似的习惯性动作。那么是否 Docker 相关命令也能自动补全呢？

二操作步骤

2.1 安装 bash-completion

sudo yum install -y bash-completion

安装完成之后重启系统或者重新登录 shell。如果安装成功。键入 docker p 后，再 Tab 键，系统显示如下：

pause   plugin  port    ps      pull    push

此时，我们运行例如 docker run 之类的命令，键入镜像的首字母，镜像名称依然无法自动补全。

2.2 根据 Docker 官方文档进一步配置

sudo curl -L https://raw.githubusercontent.com/docker/compose/1.24.1/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose
source /etc/bash_completion.d/docker-compose

/etc/bash_completion.d/docker-compose内容如下：

#!/bin/bash
#
# bash completion for docker-compose
#
# This work is based on the completion for the docker command.
#
# This script provides completion of:
#  - commands and their options
#  - service names
#  - filepaths
#
# To enable the completions either:
#  - place this file in /etc/bash_completion.d
#  or
#  - copy this file to e.g. ~/.docker-compose-completion.sh and add the line
#    below to your .bashrc after bash completion features are loaded
#    . ~/.docker-compose-completion.sh__docker_compose_previous_extglob_setting=$(shopt -p extglob)
shopt -s extglob__docker_compose_q() {docker-compose 2>/dev/null "${top_level_options[@]}" "$@"
}# Transforms a multiline list of strings into a single line string
# with the words separated by "|".
__docker_compose_to_alternatives() {local parts=( $1 )local IFS='|'echo "${parts[*]}"
}# Transforms a multiline list of options into an extglob pattern
# suitable for use in case statements.
__docker_compose_to_extglob() {local extglob=$( __docker_compose_to_alternatives "$1" )echo "@($extglob)"
}# Determines whether the option passed as the first argument exist on
# the commandline. The option may be a pattern, e.g. `--force|-f`.
__docker_compose_has_option() {local pattern="$1"for (( i=2; i < $cword; ++i)); doif [[ ${words[$i]} =~ ^($pattern)$ ]] ; thenreturn 0fidonereturn 1
}# Returns `key` if we are currently completing the value of a map option (`key=value`)
# which matches the extglob passed in as an argument.
# This function is needed for key-specific completions.
__docker_compose_map_key_of_current_option() {local glob="$1"local key glob_posif [ "$cur" = "=" ] ; then        # key= casekey="$prev"glob_pos=$((cword - 2))elif [[ $cur == *=* ]] ; then     # key=value case (OSX)key=${cur%=*}glob_pos=$((cword - 1))elif [ "$prev" = "=" ] ; thenkey=${words[$cword - 2]}  # key=value caseglob_pos=$((cword - 3))elsereturnfi[ "${words[$glob_pos]}" = "=" ] && ((glob_pos--))  # --option=key=value syntax[[ ${words[$glob_pos]} == @($glob) ]] && echo "$key"
}# suppress trailing whitespace
__docker_compose_nospace() {# compopt is not available in ancient bash versionstype compopt &>/dev/null && compopt -o nospace
}# Outputs a list of all defined services, regardless of their running state.
# Arguments for `docker-compose ps` may be passed in order to filter the service list,
# e.g. `status=running`.
__docker_compose_services() {__docker_compose_q ps --services "$@"
}# Applies completion of services based on the current value of `$cur`.
# Arguments for `docker-compose ps` may be passed in order to filter the service list,
# see `__docker_compose_services`.
__docker_compose_complete_services() {COMPREPLY=( $(compgen -W "$(__docker_compose_services "$@")" -- "$cur") )
}# The services for which at least one running container exists
__docker_compose_complete_running_services() {local names=$(__docker_compose_services --filter status=running)COMPREPLY=( $(compgen -W "$names" -- "$cur") )
}_docker_compose_build() {case "$prev" in--build-arg)COMPREPLY=( $( compgen -e -- "$cur" ) )__docker_compose_nospacereturn;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--build-arg --compress --force-rm --help --memory --no-cache --pull --parallel" -- "$cur" ) );;*)__docker_compose_complete_services --filter source=build;;esac
}_docker_compose_bundle() {case "$prev" in--output|-o)_filedirreturn;;esacCOMPREPLY=( $( compgen -W "--push-images --help --output -o" -- "$cur" ) )
}_docker_compose_config() {case "$prev" in--hash)if [[ $cur == \\* ]] ; thenCOMPREPLY=( '\*' )elseCOMPREPLY=( $(compgen -W "$(__docker_compose_services) \\\* " -- "$cur") )fireturn;;esacCOMPREPLY=( $( compgen -W "--hash --help --quiet -q --resolve-image-digests --services --volumes" -- "$cur" ) )
}_docker_compose_create() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--build --force-recreate --help --no-build --no-recreate" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_docker_compose() {case "$prev" in--tlscacert|--tlscert|--tlskey)_filedirreturn;;--file|-f)_filedir "y?(a)ml"return;;--log-level)COMPREPLY=( $( compgen -W "debug info warning error critical" -- "$cur" ) )return;;--project-directory)_filedir -dreturn;;$(__docker_compose_to_extglob "$daemon_options_with_args") )return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "$daemon_boolean_options $daemon_options_with_args $top_level_options_with_args --help -h --no-ansi --verbose --version -v" -- "$cur" ) );;*)COMPREPLY=( $( compgen -W "${commands[*]}" -- "$cur" ) );;esac
}_docker_compose_down() {case "$prev" in--rmi)COMPREPLY=( $( compgen -W "all local" -- "$cur" ) )return;;--timeout|-t)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --rmi --timeout -t --volumes -v --remove-orphans" -- "$cur" ) );;esac
}_docker_compose_events() {case "$prev" in--json)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --json" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_exec() {case "$prev" in--index|--user|-u|--workdir|-w)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "-d --detach --help --index --privileged -T --user -u --workdir -w" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_help() {COMPREPLY=( $( compgen -W "${commands[*]}" -- "$cur" ) )
}_docker_compose_images() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help --quiet -q" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_kill() {case "$prev" in-s)COMPREPLY=( $( compgen -W "SIGHUP SIGINT SIGKILL SIGUSR1 SIGUSR2" -- "$(echo $cur | tr '[:lower:]' '[:upper:]')" ) )return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help -s" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_logs() {case "$prev" in--tail)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--follow -f --help --no-color --tail --timestamps -t" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_pause() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_port() {case "$prev" in--protocol)COMPREPLY=( $( compgen -W "tcp udp" -- "$cur" ) )return;;;--index)return;;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --index --protocol" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_ps() {local key=$(__docker_compose_map_key_of_current_option '--filter')case "$key" insource)COMPREPLY=( $( compgen -W "build image" -- "${cur##*=}" ) )return;;status)COMPREPLY=( $( compgen -W "paused restarting running stopped" -- "${cur##*=}" ) )return;;esaccase "$prev" in--filter)COMPREPLY=( $( compgen -W "source status" -S "=" -- "$cur" ) )__docker_compose_nospacereturn;;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--all -a --filter --help --quiet -q --services" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_pull() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help --ignore-pull-failures --include-deps --no-parallel --quiet -q" -- "$cur" ) );;*)__docker_compose_complete_services --filter source=image;;esac
}_docker_compose_push() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help --ignore-push-failures" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_restart() {case "$prev" in--timeout|-t)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --timeout -t" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_rm() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--force -f --help --stop -s -v" -- "$cur" ) );;*)if __docker_compose_has_option "--stop|-s" ; then__docker_compose_complete_serviceselse__docker_compose_complete_services --filter status=stoppedfi;;esac
}_docker_compose_run() {case "$prev" in-e)COMPREPLY=( $( compgen -e -- "$cur" ) )__docker_compose_nospacereturn;;--entrypoint|--label|-l|--name|--user|-u|--volume|-v|--workdir|-w)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--detach -d --entrypoint -e --help --label -l --name --no-deps --publish -p --rm --service-ports -T --use-aliases --user -u --volume -v --workdir -w" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_scale() {case "$prev" in=)COMPREPLY=("$cur")return;;--timeout|-t)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --timeout -t" -- "$cur" ) );;*)COMPREPLY=( $(compgen -S "=" -W "$(__docker_compose_services)" -- "$cur") )__docker_compose_nospace;;esac
}_docker_compose_start() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help" -- "$cur" ) );;*)__docker_compose_complete_services --filter status=stopped;;esac
}_docker_compose_stop() {case "$prev" in--timeout|-t)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--help --timeout -t" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_top() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help" -- "$cur" ) );;*)__docker_compose_complete_running_services;;esac
}_docker_compose_unpause() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--help" -- "$cur" ) );;*)__docker_compose_complete_services --filter status=paused;;esac
}_docker_compose_up() {case "$prev" in=)COMPREPLY=("$cur")return;;--exit-code-from)__docker_compose_complete_servicesreturn;;--scale)COMPREPLY=( $(compgen -S "=" -W "$(__docker_compose_services)" -- "$cur") )__docker_compose_nospacereturn;;--timeout|-t)return;;esaccase "$cur" in-*)COMPREPLY=( $( compgen -W "--abort-on-container-exit --always-recreate-deps --build -d --detach --exit-code-from --force-recreate --help --no-build --no-color --no-deps --no-recreate --no-start --renew-anon-volumes -V --remove-orphans --scale --timeout -t" -- "$cur" ) );;*)__docker_compose_complete_services;;esac
}_docker_compose_version() {case "$cur" in-*)COMPREPLY=( $( compgen -W "--short" -- "$cur" ) );;esac
}_docker_compose() {local previous_extglob_setting=$(shopt -p extglob)shopt -s extgloblocal commands=(buildbundleconfigcreatedowneventsexechelpimageskilllogspauseportpspullpushrestartrmrunscalestartstoptopunpauseupversion)# Options for the docker daemon that have to be passed to secondary calls to# docker-compose executed by this script.local daemon_boolean_options="--skip-hostname-check--tls--tlsverify"local daemon_options_with_args="--file -f--host -H--project-directory--project-name -p--tlscacert--tlscert--tlskey"# These options are require special treatment when searching the command.local top_level_options_with_args="--log-level"COMPREPLY=()local cur prev words cword_get_comp_words_by_ref -n : cur prev words cword# search subcommand and invoke its handler.# special treatment of some top-level optionslocal command='docker_compose'local top_level_options=()local counter=1while [ $counter -lt $cword ]; docase "${words[$counter]}" in$(__docker_compose_to_extglob "$daemon_boolean_options") )local opt=${words[counter]}top_level_options+=($opt);;$(__docker_compose_to_extglob "$daemon_options_with_args") )local opt=${words[counter]}local arg=${words[++counter]}top_level_options+=($opt $arg);;$(__docker_compose_to_extglob "$top_level_options_with_args") )(( counter++ ));;-*);;*)command="${words[$counter]}"break;;esac(( counter++ ))donelocal completions_func=_docker_compose_${command//-/_}declare -F $completions_func >/dev/null && $completions_funceval "$previous_extglob_setting"return 0
}eval "$__docker_compose_previous_extglob_setting"
unset __docker_compose_previous_extglob_settingcomplete -F _docker_compose docker-compose docker-compose.exe

至此，所有补全功能相关的准备工作完成！执行 docker run 类似的命令时，镜像名称及 tag 均能自动补全了。

笔记：Docker命令自动补全相关推荐

Docker 命令自动补全必须有
点击上方蓝色"程序猿DD",选择"设为星标" 回复"资源"获取独家整理的学习资料! 前言不知道这个小伙伴有多久没用过 Docker 了, ...
linux shell中的命令自动补全（compgen complete）与命令行参数解析
linux shell中的命令自动补全(compgen complete)与命令行参数解析标签: shell脚本 2013-12-31 21:56 6661人阅读评论(6) 收藏举报分类: ...
实现 npm script 命令自动补全
实现 npm script 命令自动补全当 npm script 里面积累的命令越来越多时,重度命令行用户肯定会好奇,能不能实现类似 bash.zsh 里面的命令自动补全?答案是肯定的,下面来逐一介 ...
mac git 命令自动补全
2019独角兽企业重金招聘Python工程师标准>>> mac git 命令自动补全 1.检查是否装了brew $ brew list如果没有,拷贝以下命令到终端回车.可以安装好b ...
shell编程-使用complete实现linux命令自动补全
一.背景介绍我们在linux终端操作的时候经常使用tab按键自动补全命令.那么这个是怎么实现的呢?当自己写脚本的时候如何让用户也能自动补全呢?linux提供了两个重要的命令帮助我们实现: compg ...
linux的compgen命令,linux shell中的命令自动补全（compgen complete）与命令行参数解析...
很多时候,当我们写一个脚本时,我们总会提供一些可选的命令选项.当可选项比较多的时候,比如git, 如果能够提供命令自动补全,无疑是锦上添花的事.而且个人认为,这种方式,比采用将命令做成选择菜单要更好一 ...
centos php自动提示,CentOS环境实现Git命令自动补全
Git就不用多介绍了,在Linux环境下开发的同学可能会发现默认已经安装的Git却并没有能实现命令的自动补全,还是感觉有点低效和不爽,因此我们需要调整下.下面直接步入正题. 1.下载源码,主要是使用源 ...
配置 OpenStack 命令自动补全
配置 openstack 命令行自动补全 The complete command is inherited from the python-cliff library, it can be use ...
Linux 命令自动补全包bash-completion
如果按TAB键不能自动补全诸多命令如 disable.start等,则需要安装bash-completion包 yum -y install bash-completionbash # 使其生效

笔记：Docker命令自动补全

笔记：Docker命令自动补全

一背景

二操作步骤

笔记：Docker命令自动补全相关推荐

最新文章

热门文章

笔记：Docker命令自动补全

笔记：Docker命令自动补全

一 背景

二 操作步骤

笔记：Docker命令自动补全相关推荐

最新文章

热门文章

一背景

二操作步骤