Deep understanding of mkdir rmdir cp mv touch stat 3

1. mkdir

-P

-V

Mkdir/tmp/p/a/B

/Tmp/q/a/B

Mkdir/tmp/{q, q}/a/B-pv

/Tmp/p/a/B

/Tmp/q/

Mkdir/tmp/{p/a/B, q/a}-pv

Job:

Mkdir/tmp

Etc/init. d, etc/sysconfig, usr/lib, usr/bin, usr/sbin,/usr

/Include, var/log, var/spool, proc, sys

2. rmdir: remove, delete the empty directory

/Tmp/m/n

Rmdir-p/tmp/m

3. file:

Cp

Mv

Touch

Stat

Cp/etc/passwd/tmp/abc copy, renamed

If abc does not exist, copy and rename it;

If abc exists:

If abc is a file, it will overwrite it and a prompt will be displayed;

If abc is a directory, the passwd file will be copied to the abc directory;

-R recursive replication;

-I interactive reminder;

-P retains the original permissions, owner and timestamp; mkdir

-

4. mv SOURCE... DEST

/Tmp/sysconfig/root

The directory cannot overwrite the file;

5. rm

-R recursive deletion;

-F force Delete, no prompt;

6. touch: manually change the timestamp

Three times:

Last access time;

Last modification time: modify, file content change;

Last change Time: change, change of file metadata;

-T;

-C if the file does not exist, do not create it;

File data:

Data

Metadata Property Information)

7. stat: view the File Attribute timestamp, file type, and so on );

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