files

Unix file permissions

There are three levels of security associated with every directory and file.

The first is the "owner".
The next is the "group". You are assigned to the appropriate group when you get your account.
The last level is "other" which is everyone on the system.

You can give or take away permission to read, write, or execute to any of user, group, or other. To see what permissions are set, use the command

  ls -l

Here are two lines of example output

An example file called 'list.txt' may contain the following:

/tmp/jar.png
/mike/www/*
/var/www/html/test.php

To remove them simply enter:

for f in $(cat list.txt); do
  rm $f
done

Or if you don't have any patterns, then it can be done using xargs:

xargs rm < list.txt