TL;DR
我在bash中有两个数组变量:archPkgs
和npmPkgs
。稍后在我的代码中,我有一个变量pkgPlatform
,它可以指向这两个变量中的任何一个。我想通过这个变量向数组中添加一个元素。我怎么能在bash中做到这一点
详细信息
我正在尝试用Python和Bash编写一个安装后脚本,我正在编写一个bast脚本来安装所有需要的软件包。下面是它的代码
# List of all Arch packages
archPkgs=(
# Display server
'xorg'
# Display manager
'lightdm'
'lightdm-webkit2-greeter'
'lightdm-webkit-theme-litarvan'
# Editor
'neovim-nightly-bin'
# WM
'i3-gaps'
'i3lock'
'i3status'
'picom'
'rofi'
# Syncing
'syncthing'
# Printing
'cups'
# Networking
'network-manager-applet'
'avahi'
'nss-mdns'
'reflector'
# Browsing
'firefox'
'firefox-nightly'
# Terminals, shell, programming, and other programsn and utilities
'kitty'
'bash-completion'
'nodejs'
'npm'
'python'
'python-pip'
# Notifications
'dunst'
# Gaming
'steam'
# Media
'vlc'
'playerctl'
'spotify'
# Audio
'pasystray'
'pulseaudio'
'pulseaudio-alsa'
'pulseaudio-bluetooth'
'pavucontrol'
'lib32-libpulse'
'lib32-alsa-plugins'
'alsa-utils'
'alsa-firmware'
# Fonts
'noto-fonts-cjk'
'noto-fonts-emoji'
'ttf-iosevka'
'ttf-liberation'
'ttf-opensans'
# Drive tools + backups
'udiskie'
'borg'
# Power management
'xfce4-power-manager'
# Themes
'arc-gtk-theme'
'breeze'
# Screenshots
'flameshot'
# Bluetooth
'blueman'
'bluez'
'bluez-utils'
)
npmPkgs=(
# Language servers
'vim-language-server'
'bash-language-server'
# Type checkers
'pyright'
)
while true; do
echo Are there any packages you would like to manage? Enter [arch/npm] [add/remove][ name of package].
read pkgPlatform pkgAction pkgName
if [ "$pkgPlatform" == 'arch' ]; then
pkgPlatform=archPkgs
elif [ "$pkgPlatform" == 'npm' ]; then
pkgPlatform=npmPkgs
elif [ "$pkgPlatform" == 'quit' ] || [ "$pkgAction" == 'quit' ] || [ "$pkgAction" == 'quit' ]; then
echo Continuing...
break
else
echo "Unknown option."
continue
fi
if [ "$pkgPlatform" != 'quit' ] && [ "$pkgAction" != 'quit' ] && [ "$pkgName" != 'quit' ]; then
while true; do
if [ "$pkgAction" == 'add' ]; then
$pkgPlatform+=pkgName
break
elif [ "$pkgAction" == 'remove' ]; then
unset "$pkgName"[$pkgPlatform]
break
每当我运行它时,都会发生这种情况
[johnny@lj-laptop post_install_scripts]$ ./02_pkgs.sh
Packages to be installed:
Arch Packages
xorg lightdm lightdm-webkit2-greeter lightdm-webkit-theme-litarvan neovim-nightly-bin i3-gaps i3lock i3status picom rofi syncthing cups network-manager-applet avahi nss-mdns reflector firefox firefox-nightly kitty bash-completion nodejs npm python python-pip dunst steam vlc playerctl spotify pasystray pulseaudio pulseaudio-alsa pulseaudio-bluetooth pavucontrol lib32-libpulse lib32-alsa-plugins alsa-utils alsa-firmware noto-fonts-cjk noto-fonts-emoji ttf-iosevka ttf-liberation ttf-opensans udiskie borg xfce4-power-manager arc-gtk-theme breeze flameshot blueman bluez bluez-utils
npm Packages
vim-language-server bash-language-server pyright
Are there any packages you would like to manage? Enter [arch/npm] [add/remove] [name of package].
When you are satisfied, enter "quit" instead of "add" or "remove".
npm add test
./02_pkgs.sh: line 153: npmPkgs+=pkgName: command not found
Packages to be installed:
Arch Packages
xorg lightdm lightdm-webkit2-greeter lightdm-webkit-theme-litarvan neovim-nightly-bin i3-gaps i3lock i3status picom rofi syncthing cups network-manager-applet avahi nss-mdns reflector firefox firefox-nightly kitty bash-completion nodejs npm python python-pip dunst steam vlc playerctl spotify pasystray pulseaudio pulseaudio-alsa pulseaudio-bluetooth pavucontrol lib32-libpulse lib32-alsa-plugins alsa-utils alsa-firmware noto-fonts-cjk noto-fonts-emoji ttf-iosevka ttf-liberation ttf-opensans udiskie borg xfce4-power-manager arc-gtk-theme breeze flameshot blueman bluez bluez-utils
npm Packages
vim-language-server bash-language-server pyright
Are there any packages you would like to manage? Enter [arch/npm] [add/remove] [name of package].
When you are satisfied, enter "quit" instead of "add" or "remove".
问题似乎在第153行
我不太确定在这一点上我的选择是什么。我粘贴了脚本,注释掉了所有的系统更改行,但是在运行它之前,您仍然应该查看它
显然剧本还没有完成,我计划早些时候重新安排很多东西
改变
到
这使得
platformPkgs
成为所需数组的nameref。然后像普通数组变量一样使用platformPkgs
然后改变
到
您面临的错误是因为您没有将项正确附加到数组中
因此,当您向变量
pkgPlatform
添加一个项时,可以按如下方式执行:您希望第153行执行的是
但是你的目标变量在一个变量中。请记住,shell的初衷是构造命令行,变量替换仅在使用
$
运算符将shell指向命令行的情况下进行要做到这一点,蛮力的方法是
这将替换目标名称,然后重新扫描生成的行
作为一个不相关的注释,您可以使用一些case语句来清理该脚本
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