Linux-Permission
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This document discusses Linux file permissions and commands used to modify permissions. It explains the rwx permissions for owner, group, and other using an example ls -l output. It then covers the chmod, chown, and chgrp commands to change file ownership, group, and permissions including recursive (-R) options and using symbolic modes.
![chown-
• chown [-R] < >[: ] < >
• chown -R monkey:mathlab banana
• chown littleq aicp0529](https://image.slidesharecdn.com/linux-100821132305-phpapp01/85/Linux-Permission-8-320.jpg)
Linux-Permission
- 1. Linux/Unix - 2010, Spring
- 2. • (Owner) • (Group) • (Other)
- 3. Linux littleq@ubuntu:~$ ls -l drwxr-xr-x 3 littleq littleq 4096 2010-02-01 01:00 ~ drwx------ 2 littleq littleq 4096 2010-02-04 11:53 amsn_received drwxr-xr-x 3 littleq littleq 4096 2010-02-21 17:33 Downloads drwxr-xr-x 9 root root 4096 2010-02-20 23:24 judge drwx------ 2 littleq littleq 4096 2010-01-25 17:22 mail drwxr-xr-x 8 littleq littleq 4096 2010-02-18 16:28 OnlineJudge drwxr-xr-x 4 littleq littleq 4096 2010-03-08 16:47 program drwxr-xr-x 7 littleq littleq 4096 2010-03-08 22:42 public_html drwxr-xr-x 3 math11 mathlab 4096 2010-02-21 17:33 Downloads
- 4. Read Write eXecute R W X 4 2 1
- 5. Linux 4 2 1 4 x 1 4 x 1 d r w x r - x r - x 7 5 5
- 6. • chmod: SUID... • chown: • chgrp:
- 7. chmod- • chmod 775 < > rwxrwxr-x 4 2 1 4 2 1 4 0 1 7 7 5 • chmod a+w,g+w < > u + W g - R o = X a
- 8. chown- • chown [-R] < >[: ] < > • chown -R monkey:mathlab banana • chown littleq aicp0529
- 9. chgrp- • chgrp < > < > • chgrp mathlab yellowfish
- 10. • • ASCII binary • data • • • block character