question about unix command .. chmod 573

[skim milk]

let's say i want to set permissions to a index.html or something... what is the rwe for chmod 573?

 

[Beattie]

573 would be r-xrwx-wx

I think you want 755

 

[ethebubbeth]

on my university unix account chmod 705 is enough to allow people to see web content, might be different for you though.

 

[NuclearFusi0n]

Originally posted by: ethebubbeth
on my university unix account chmod 705 is enough to allow people to see web content, might be different for you though.

Why give 0 to group but 5 to everybody? 😕

 

[kevinthenerd]

CHMOD file permissions break down like this:

First digit - owner
Second digit - group
Third digit - everybody

The numbers go like this:
1 - execute
2 - write
4 - read

Add those together to get your full listing:

0 - nothing
1 - execute
2 - write
3 - execute, write
4 - read
5 - execute, read
6 - write, read
7 - execute, write, read

(It actually does this by using three bits of binary for each. That's why it's in powers of two, and you end up with 2^3 posssible combinations in the end: 8.)

 

[kevinthenerd]

Examples:

000 - completely closed permissions (accessible only to root)
777 - completely open (accesible to everybody in every way)
755 - complete permissions to owner, but everybody else is forbidden from writing
573 - the owner can't write, but everybody in the group has total access. Common users can only execute and write, not read.
705 - owner has total access, group has no access, common users are forbidden from writing (but can execute and read)