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cdspell帮你自动更正cd命令中的错误目录
source link: https://www.lujun9972.win/blog/2018/02/09/cdspell%E5%B8%AE%E4%BD%A0%E8%87%AA%E5%8A%A8%E6%9B%B4%E6%AD%A3cd%E5%91%BD%E4%BB%A4%E4%B8%AD%E7%9A%84%E9%94%99%E8%AF%AF%E7%9B%AE%E5%BD%95/index.html
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cdspell帮你自动更正cd命令中的错误目录
使用cd命令跳转目录时难免会有输错目录名称的时候，
[lujun9972@F31 ~]$ cd ~/Download bash: cd: /home/lujun9972/Download: 没有那个文件或目录
可以通过设置 cdspell 来让bash帮你自动更正输入错误的目录。像这样
shopt -s cdspell
之后当输入的目录中出现字符错位、缺少一个字符或者重复输入同一字符时，bash会尝试查找正确的目录，若找到了则输出正确的目录并跳转其中。
[lujun9972@F31 ~]$ shopt -s cdspell [lujun9972@F31 ~]$ cd ~/Download /home/lujun9972/Downloads [lujun9972@F31 Downloads]$
但是需要注意的是， cdspell 无法纠正编辑距离超过1的错误，比如当你缺少两个字符时,依然会报错
[lujun9972@F31 ~]$ cd ~/Downloa bash: cd: /home/lujun9972/Downloa: 没有那个文件或目录
关于 cdspell 的说明可以参见 man bash 中 shopt 的描述
cdspell If set, minor errors in the spelling of a directory com-
ponent in a cd command will be corrected. The errors
checked for are transposed characters, a missing charac-
ter, and one character too many. If a correction is
found, the corrected filename is printed, and the com-
mand proceeds. This option is only used by interactive
shells.
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