File permissions in UNIX Linux with Example >> Unix Tutorial

Whenever we execute ls command in UNIX you might have observed that it list file name with lot of details e.g.
stock_options:~/test ls -lrt
total 8.0K
-rw-r--r-- 1 stock_options Domain Users 1.1K Jul 15 11:05 sample

If you focus on the first column you will see the file permissions as "-rw-r--r--" this is made of three parts user, group, and others. The user part is permission relate to user logged in, group is for all the members of the group and others is for all others. also each part is made of three permissions read, write and execute so "rw-" means only "read and write" permission and "r--" means read-only permission.
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