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hcc@debian:/tmp$ cd /tmp/
hcc@debian:/tmp$ mkdir lx
hcc@debian:/tmp$ chmod 777 lx/
hcc@debian:/tmp$ cd lx/
hcc@debian:/tmp/lx$ touch 1 2 3
hcc@debian:/tmp/lx$ ls -l
×Ü¼Æ 0
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 1
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 2
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 3
hcc@debian:/tmp/lx$ su sun
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sun@debian:/tmp/lx$ vim 1
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-rw-r--r-- 1 sun sun 40 10-23 21:46 1
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 2
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 3
sun@debian:/tmp/lx$
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sun@debian:/tmp/lx$ ls -l
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-rw-r--r-- 1 sun sun 40 10-23 21:46 1
-rw-r--r-- 1 hcc hcc 0 10-23 21:41 2
sun@debian:/tmp/lx$
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