I have some shell scripts that will perform certain actions only on a weekend (Saturday or Sunday). There are two ways to solve the “is it a weekend” logic.
I have been looking for a tool to encrypt
Ki values (into
eKi) using AES encryption.
Ki is a 128-bit value used in authenticating the SIMs on the mobile network.
Linux has all the tools you need to generate a random password. This can be accomplished by a special file
/dev/random, that serves as a random number generator.
If you are planning to discard your old hard disk, make sure that they do not contain any valuable information when they head out of your door. The last thing on your mind is the potential of having your identity stolen from sensitive information stored in that hard disk.
To perform disk usage monitoring of users on a UNIX system, you will, first of all, need to determine the home directories of the users. You might ask, “Aren’t all the user home directories found under /home?”. Well, typically yes, but it’s not always true.
A couple of readers, upon reading this article to calculate yesterday’s date in a shell script, have requested for a similar script that can be used to calculate tomorrow’s date.
In modern UNIX and Linux systems, user passwords are encrypted and stored in the
/etc/shadow file. On BSD systems, the passwords are kept in the
/etc/master.passwd file. The encrypted password field in the file contains more than just the encrypted password, it contains additional information.