Linux命令: ln
建立软连接:
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$sudo ln -s ruby2.0 ruby
$ll | grep ruby
lrwxrwxrwx 1 root root 7 Oct 20 17:46 ruby -> ruby2.0*
-rwxr-xr-x 1 root root 6304 Nov 19 2014 ruby1.9.1*
-rwxr-xr-x 1 root root 6264 Nov 19 2014 ruby2.0*
删除软连接:
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$sudo rm ruby