Linux stores users’ encrypted passwords, as well as other security information, such as account or password expiration values, in the /etc/shadow file. Someday you may need to edit the /etc/shadow file manually to set or change ones password.
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HowTo: Create a Password Protected ZIP File in Linux
This is a small note that describes how to encrypt and decrypt a ZIP file from the Linux command line. I’ll show how to create a password protected ZIP archive from one or several unprotected files or folders. Warning! The standard ZIP encryption is very weak and could be cracked easily. Password Protected ZIP File […]
Generating Random Passwords in the Linux Command Line
You can use the following command to generate the random password: $ tr -dc A-Za-z0-9 < /dev/urandom | head -c 8 | xargs Sample output: 4fFUND1d You can create a bash shell function as follows (add to your ~/.bashrc): # Random password generator genpasswd() { tr -dc A-Za-z0-9 < /dev/urandom | head -c ${1:-8} | […]