Created
February 25, 2014 13:00
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シンボリックリンクの向き先変更（ln -nfs TARGET LINK_NAME） ref: http://qiita.com/takeoverjp/items/bb1576e90a8a495db4b3
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| $ ls -l | |
| TARGET1/ | |
| TARGET2/ | |
| $ ln -fs TARGET1 LINK_NAME # 1回目は大丈夫 | |
| $ ls -l | |
| LINK_NAME -> TARGET1/ | |
| TARGET1/ | |
| TARGET2/ | |
| $ ln -fs TARGET2 LINK_NAME # 2回目は．．． | |
| $ ls -l | |
| LINK_NAME -> TARGET1/ # 向き先が変わっていない | |
| TARGET1/ | |
| TARGET2/ | |
| $ ls -l LINK_NAME/ | |
| TARGET2 -> TARGET2 # なんと循環参照してしまっている |
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| (続き) | |
| $ ln -nfs TARGET2 LINK_NAME | |
| $ ls -l | |
| LINK_NAME -> TARGET2/ # ちゃんと向き先が変わっている | |
| TARGET1/ | |
| TARGET2/ |
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