today's howtos
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Linux Handbook ☛ How to Enable, Disable and Restart firewalld
Learn about managing the firewall by enabling, disabling and restarting firewalld.
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How to Use Envsubst to Replace Environment Variables in Linux
At one point, you may have come across a template, configuration, or initialization file containing bash variables as placeholders that you’ll need to fill in before actual usage.
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How to Use XXD Command in Linux: A Step-by-Step Guide
The “xxd” command allows to convert data from standard input or a file into hexadecimal or binary output, and it can also reverse the process, converting hex (not binary) to regular characters.