LinuxShell_root

• sudo whoami

  ✗ sudo whoami
  Password:
  root
  

• whoami

  ✗ whoami
  pintred
  

• chmod < number >

原理詳見 https://blog.csdn.net/u013197629/article/details/73608613 ）(三組數字的意義)

chmod 666

chmod 777

chmod 755

  ➜  desktop ls -l StaceyKent.png  

  -rw-r--r--@ 1 pintred  staff  173305  4 28 00:32 StaceyKent.png

  ➜  desktop chmod 666 StaceyKent.png

  ➜  desktop ls -l StaceyKent.png

  -rw-rw-rw-@ 1 pintred  staff  173305  4 28 00:32 StaceyKent.png

• permission

開放權限攸關 chmod 後面所接的三組數字。

  chmod a+x <file>
  // all user can write file.
  
  chmod u+x <file>
  // only owner can write file.

• who got the file

  u: user 擁有者
  
  g: group 群組
  
  o: others 其他人
  

(to be continued...)