bash 如何创建符号链接以在 Mac osx 上的终端中打开目录？
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How to create a symlink to open a directory in Terminal on Mac osx?
提问by Kelly
There are certain folders I am cd'ing into all day long...for instance, "dev" which is in my Documents folder.
我整天都在整理某些文件夹……例如，我的 Documents 文件夹中的“dev”。
I had this bright idea to set up symlinks so I could simply type "dev" and Terminal would cd into that directory. This doesn't seem to work though. My two attempts are below.
我有一个很好的想法来设置符号链接，这样我就可以简单地输入“dev”，终端将 cd 进入该目录。但这似乎不起作用。我的两次尝试如下。
Anyone know how to do this or is there a better way?
任何人都知道如何做到这一点或有更好的方法吗？
ln -s /Users/kelly/Documents/Dev/ dev
ln -s 'cd /Users/kelly/Documents/Dev/' dev
$ dev
bash: dev: command not found
回答by Elmar Peise
With a symlink you can use
使用符号链接，您可以使用
ln -s your/dev/directory/ dev
but you can only use it in the directory you created it in and in the form of cd dev.
但您只能在您创建它的目录中以cd dev.
If you just want to type devat any point, use an alias:
如果您只想dev在任何时候输入，请使用别名：
alias dev="cd your/dev/direcrory/"
(this should then be in your ~/.bashrc)
（这应该在你的~/.bashrc）
回答by suspectus
You could use an aliasfor dev. Add to your ${HOME}/.bashrc
您可以使用aliasfor dev。添加到您的 ${HOME}/.bashrc
alias dev='cd /Users/kelly/Documents/Dev/'
and bash correctly parses ~in an alias:
和 bash 正确解析~别名：
alias dev='cd ~/Documents/Dev/'
Using an alias eliminates the need for the symbolic link at all.
使用别名完全不需要符号链接。
回答by Stephan Kulla
You have to write cd devin your case, but it might be better for you to use bash aliases...
你必须cd dev在你的情况下写，但你最好使用bash 别名......
Write in your $HOME/.bash_aliasesfile:
在您的$HOME/.bash_aliases文件中写入：
alias dev='cd /Users/kelly/Documents/Dev/'
after opening a new terminal executing devwill give you, what you want...
打开一个新的终端执行后dev会给你你想要的......
回答by dave sines
In your $HOME/.bashrc, declare an array which maps directories to aliases.
在您的 $HOME/.bashrc 中，声明一个将目录映射到别名的数组。
declare -A __diraliasmap=(
[dev]="/Users/kelly/Documents/Dev"
[other]="/Users/kelly/Documents"
)
Also define a command_not_found_handle function. If defined, this function will be run by bash when a command is not found. In the function, check whether the command which failed is listed as an alias for a directory and, if so, cd to the associated directory.
还定义一个 command_not_found_handle 函数。如果已定义，则当找不到命令时，该函数将由 bash 运行。在函数中，检查失败的命令是否被列为目录的别名，如果是，则 cd 到关联的目录。
command_not_found_handle()
{
if [[ ${__diraliasmap[]+set} = set ]]; then
builtin cd "${__diraliasmap[]}"
else
false
fi
}
