`chmod` Examples

Let’s change some of the permissions as we discussed a couple of pages ago. Here’s the way our files are now:

-rwxr-xr-x  joe  acctg  archive.sh 
-rw-rw-r--  joe  acctg  orgchart.gif
-rw-rw-r--  joe  acctg  personnel.txt
-rw-r--r--  joe  acctg  publicity.html
drwxrwxr-x  joe  acctg  sales
-rw-r-----  joe  acctg  topsecret.inf
-rwxr-xr-x  joe  acctg  wordmatic

First, let’s prevent outsiders from executing archive.sh

Before:	`-rwxr-xr-x archive.sh`
Command:	`chmod o=r archive.sh`
After:	`-rwxr-xr-- archive.sh`

Take away all permissions for the group for topsecret.inf We do this by leaving the permissions part of the command empty.

Before:	`-rw-r----- topsecret.inf`
Command:	`chmod g= topsecret.inf`
After:	`-rw------- topsecret.inf`

Open up publicity.html for reading and writing by anyone.

Before:	`-rw-r--r-- publicity.html`
Command:	`chmod og=rw publicity.html`
After:	`-rw-rw-rw- publicity.html`

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chmod Examples

`chmod` Examples