我这样做只是将 ralt_switch 添加到英语（德沃夏克-美国）键盘
sudo sed -i "249i\ include 'level3(ralt_switch)'" \
/usr/share/X11/xkb/symbols/us
sudo dpkg-reconfigure xkb-data
重新启动后，您会在登录时看到一个无法使用的键盘，您无法输入任何内容。您必须按照说明使用 Live USB 修复该文件这里和chroot。重启后，文件/usr/share/X11/xkb/symbols/us发生了更多的变化；每个环境现在都include 'level3(ralt_switch)'在其部分的末尾
66,67d65
<
< include "level3(ralt_switch)"
130,131d127
<
< include "level3(ralt_switch)"
185,186d180
<
< include "level3(ralt_switch)"
248d241
< include 'level3(ralt_switch)'
313,314d305
<
< include "level3(ralt_switch)"
359,360d349
<
< include "level3(ralt_switch)"
600,601d588
<
< include "level3(ralt_switch)"
655,656d641
<
< include "level3(ralt_switch)"
720,721d704
<
< include "level3(ralt_switch)"
787,788d769
<
< include "level3(ralt_switch)"
831,832d811
<
< include "level3(ralt_switch)"
851d829
< include "level3(switch)"
898,899d875
<
< include "level3(switch)"
929,930d904
<
< include "level3(switch)"
979,980d952
<
< include "level3(switch)"
1038,1039d1009
<
< include "level3(ralt_switch)"
1102,1103d1071
<
< include "level3(ralt_switch)"
1188,1189d1155
<
< include "level3(ralt_switch)"
1233,1234d1198
<
< include "level3(alt_switch)"
1277,1278d1240
<
< include "level3(ralt_switch)"
1318,1319d1279
<
< include "level3(ralt_switch)"
1365,1366d1324
<
< include "level3(ralt_switch)"
1415,1416d1372
<
< include "level3(ralt_switch)"
我通过以下方式生成了这些行
sudo sed -i.bak "${pos[1]}i\ include 'level3(ralt_switch)'" /usr/share/X11/xkb/symbols/us
我正在考虑如何在include "level....或许 ...
系统：Ubuntu 16.04 64 位
Linux 内核：4.6
Linux 内核选项：wl
硬件：Macbook Air 2013-mid
答案1
正确答案由嗯: 有双引号并转义它们
sudo sed -i.bak \
"${pos[1]}i\ include \"level3(ralt_switch)\"" /usr/share/X11/xkb/symbols/us