【コマンドライン】ハードリンクとシンボリックリンクの作成 [ ln ]

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$ ls -i
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386043 hl-sample.txt  386043 memo.txt  386042 sl-sample.txt

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$ find ./ -inum 386043
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./hl-sample.txt
./memo.txt

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$ ls -l
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-rw-rw-r-- 2 hacker staff 13  8月 27 15:48 hl-sample.txt
-rw-rw-r-- 2 hacker staff 13  8月 27 15:48 memo.txt
lrwxrwxrwx 1 hacker staff  8  8月 27 15:48 sl-sample.txt -> memo.txt

$ cat memo.txt 
Hello World!
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$ ln memo.txt hl-sample.txt
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$ ls -i
386043 hl-sample.txt  386043 memo.txt
$ cat hl-sample.txt 
Hello World!

$ echo "Good Morning." > memo.txt
$ cat memo.txt 
Good Morning.
$ cat hl-sample.txt 
Good Morning.

$ ls -i
386043 hl-sample.txt  386043 memo.txt
$ rm memo.txt 
$ ls
hl-sample.txt
$ cat hl-sample.txt 
Good Morning.

$ cat memo.txt 
Hello World!
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$ ln -s memo.txt sl-sample.txt
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$ ls -i
386051 memo.txt  386042 sl-sample.txt
$ cat sl-sample.txt 
Hello World!

$ echo "Good Morning." > memo.txt
$ cat memo.txt 
Good Morning.
$ cat sl-sample.txt 
Good Morning.

$ ls -li
386052 -rw-rw-r-- 2 hacker staff 13  8月 27 16:41 hl-sample.txt
386052 -rw-rw-r-- 2 hacker staff 13  8月 27 16:41 memo.txt
386042 lrwxrwxrwx 1 hacker staff  8  8月 27 16:34 sl-sample.txt -> memo.txt
$ rm memo.txt 
$ cat sl-sample.txt 
cat: sl-sample.txt: そのようなファイルやディレクトリはありません
$ cat hl-sample.txt 
Hello World!

$ ls tmp
memo.txt
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$ ln -s tmp sample
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$ ls -l
lrwxrwxrwx 1 hacker staff    3  8月 27 16:45 sample -> tmp
drwxrwxr-x 2 hacker staff 4096  8月 27 16:45 tmp
$ ls sample
memo.txt