You don't want to use alias
, what you are after is an environment variable
$ export SITENAME="~/sites/path/to/my/site/"
$ cd $SITENAME
Bash is quite picky over syntax - note the lack of spaces in the export and the $
when you use it.
题
I'm kind of just realizing how powerful the terminal can be. My question is essentially if I can create an alias that just prints the name of a directory. For example, I could easily make an alias such as "alias sitename="cd ~/sites/path/to/my/site/". But what I want is an alias that only prints the directory name so that I can use it for several things. So that, for example, if I wanted I could just say cd "alias", or mv from-dir "alias".
Is there a way to do this? I've tried and it seems to recognize the alias if I just type it in: it will report "alias" is a directory. But if I try to couple it with another command, it fails.
解决方案
You don't want to use alias
, what you are after is an environment variable
$ export SITENAME="~/sites/path/to/my/site/"
$ cd $SITENAME
Bash is quite picky over syntax - note the lack of spaces in the export and the $
when you use it.
其他提示
Use a variable, simply
d=/path/to/some/directory
echo $d
cd $d
mv somedir $d/
You don't need to use an alias here, a variable is sufficient.
It sounds like you want to set a variable, not an alias. Such as,
sitename=/home/jimbo/
. Then, cd $sitename
would put you at /home/jimbo/
.
If you want this variable to have permanence (i.e. you don't have to set it every time you open a new session), then you can make it an environmental variable using the export
command or add it to your .bashrc
file (typically located at $HOME/.bashrc
) using the line: sitename=/home/jimbo/
.
FYI, $HOME
is another environmental variable that's equivalent to ~/
.
Using a variable is the simplest solution. You could get fancy and use an array:
mydir() { echo "/my/directory"; }
To display the value
mydir
To use the value, you need some extra puncuation
cd $(mydir)
cd `mydir`