Page 42 - RHEL8 BOOK

Permission parameters used with chmod command
Category u g o
Operators + - =
Permissions r w x
Weight 4 2 1
Applying permission to File or Directory
[root@comp1 ~]#chmod <permissions> <file/direccory>
Permission - Absolute
Applying permission to Owner (u), Group (g)
& Others (o) for File1

chmod 4 5 6 file1

u g o

4=r 4+1=rx 4+2=rw

Example of Permission - Symbolic
Applying permission to Owner (u), Group (g)
& Others (o) for File1

chmod u=r, g=rx,o=rw file1

u g o

File permission mode: we can assign to the file / directory in 2 modes are
1. Symbolic mode
2. Absolute mode

1. Symbolic Mode: - In this mode we can assign the permission through character, like read permission
can have identified with the “r” character write “w” and execute with the “x” character.

2. Absolute mode: - In this mode we can assign the permission through numbers like read is 4, write is 2
and execute is 1

S. Pradhan
(MCA, MBA-IT, BCA, CCNA, MCSA 2012, RHCE, ETHICAL HACKING)
Email Id:-spradhan.iiht@gmail.com
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