linux补全参数的命令,自定义linux命令参数补全以提高工作效率

我们在使用bash命令时&＃xff0c;会经常使用二次tab键进行补齐。

例如我们常用的telnet命令&＃xff0c;在输入二次tab键时&＃xff0c;会列出当前系统配置的所有主机名&＃xff0c;供选择

# 输入 telnet

[huangcihui:/home/huangcihui] telnet

::1 localhost localhost4 localhost4.localdomain4 localhost6 localhost6.localdomain6 localhost.localdomain

[huangcihui:/home/huangcihui] telnet

在输入telnet参数过程中按回车&＃xff0c;系统也会自动补全主机名

#输入 telnet l

[huangcihui:/home/huangcihui] telnet localhost

其它常用命令&＃xff0c;也会有这个功能。 例如systemctl,输入二次tab键时会列出systemctl所有子命令参数

#systemctl

[huangcihui:/home/huangcihui] systemctl

add-requires daemon-reexec enable hybrid-sleep kill list-units reload-or-restart set-property suspend

add-wants daemon-reload exit is-active link mask reload-or-try-restart show switch-root

cancel default force-reload is-enabled list-dependencies poweroff rescue show-environment try-restart

cat delete get-default is-failed list-jobs preset reset-failed snapshot unmask

condreload disable halt isolate list-sockets reboot restart start unset-environment

condrestart edit help is-system-running list-timers reenable set-default status

condstop emergency hibernate kexec list-unit-files reload set-environment stop

[huangcihui:/home/huangcihui] systemctl

那么&＃xff0c;自己开发的程序&＃xff0c;能不能实现tab自动补全&＃xff1f; 答案是肯定的&＃xff0c;借助bash的complete命令即可。

假设我们新写了一个命令叫tel&＃xff0c;我们想让它实现telnet的被全主机名功能&＃xff0c;用这个命令即可&＃xff1a;complete -a hostname tel 效果如下&＃xff1a;

[huangcihui:/home/huangcihui] complete -a hostname tel

[huangcihui:/home/huangcihui] #tel l

[huangcihui:/home/huangcihui] tel localhost

而像systemctl这种补全子命令的功能&＃xff0c;要怎么做呢&＃xff1f; 下面我演示一下怎么让git命令实现子命令补全功能

[huangcihui:/home/huangcihui] complete -w "add checkout clone commit diff pull push status" git

[huangcihui:/home/huangcihui] #git

[huangcihui:/home/huangcihui] git

add checkout clone commit diff pull push status

[huangcihui:/home/huangcihui] git

complete还有更多复杂的用法&＃xff0c;有兴趣可以参考这篇文章

https://blog.csdn.net/koprvhdix/article/details/81036240

linux shell 命令自动补全(各方资料汇总补全版) clockworkai

下面是我使用complete命令帮我自定义的dockerq命令进行自动补全的函数

# 新建一个命令dockerq 用于快速操作docker

__dockerq()

{

compreply&＃61;() # 清空候选列表

local cur&＃61;${comp_words[comp_cword]}; # 用户输入单词赋值给cur

local cmd&＃61;${comp_words[comp_cword-1]}; # 用户正在操作的命令或者子命令

case $cmd in

&＃39;dockerq&＃39;)

# 获取docker所有命令

# local cmdlist&＃61;$(docker --help|awk &＃39;{if ($1 &＃61;&＃61; "commands:") { v_showflag &＃61; 1; next; } else if ($1 &＃61;&＃61; "") v_showflag &＃61; 0; if (v_showflag) print $1;}&＃39;)

cmdlist&＃61;"images pull start run"

# 获取以cul开头的所有命令

local wordlist&＃61;"$(compgen -w "${cmdlist}" -- $cur)"

# 给候选列表赋值

compreply&＃61;( ${wordlist} ) ;;

&＃39;images&＃39;)

#使用docker images获取所有镜像名称

local cmdlist&＃61;$(docker images|awk &＃39;{if (nr !&＃61; 1) print $1;}&＃39;)

# 获取以cul开头的所有命令

local wordlist&＃61;"$(compgen -w "${cmdlist}" -- $cur)"

# 给候选列表赋值

compreply&＃61;( ${wordlist} ) ;;

&＃39;run&＃39;)

#使用docker ps获取所有容器名称

local cmdlist&＃61;$(docker ps -a|awk &＃39;{if (nr !&＃61; 1) print $nf;}&＃39;)

# 获取以cul开头的所有命令

local wordlist&＃61;"$(compgen -w "${cmdlist}" -- $cur)"

# 给候选列表赋值

compreply&＃61;( ${wordlist} ) ;;

&＃39;*&＃39;)

;;

esac

if [[ "${comp_words[1]}" &＃61;&＃61; "read" && ${comp_cword} -eq 2 ]]; then

local pro&＃61;($(pwd))

cd /data

compopt -o nospace

compreply&＃61;($(compgen -d -f -- $cur))

cd $pro

fi

return 0

}

complete -f __dockerq dockerq

alias dockerq&＃61;docker

使用dockerq命令时&＃xff0c;按tab键可以自动补齐docker镜像或者容器的名称&＃xff0c;非常方便

[root&＃64;localhost ~]# dockerq

images pull run start

[root&＃64;localhost ~]# dockerq run

adoring_wozniak charming_ptolemy composetest_web_1 determined_hodgkin exciting_cartwright hardcore_mestorf hungry_mclean mystifying_cohen nginx001 thirsty_franklin

alptest1 composetest_redis_1 cpu_set_demo example1 exp1 heuristic_cannon magical_cartwright nginx phpfpm thirsty_merkle

[root&＃64;localhost ~]# dockerq run ^c

[root&＃64;localhost ~]# dockerq images

abh1nav/dockerui composetest_web feisky/nginx mysql redis

alpine docker/compose feisky/php-fpm nginx todoapp

busybox dockerinpractice/dockerfile-from-image hello-world node ubuntu

centurylink/dockerfile-from-image dockerinpractice/docker-image-graph lukapeschke/dfa python wordpress

[root&＃64;localhost ~]# dockerq images

希望这篇文章对你有帮助。