I use CyberChef daily for malware analysis, programming, and CTF challenges. Installing CyberChef locally can be handy for general privacy and OPSEC reasons. A local installation also works without internet connectivity. The main drawback of using CyberChef locally is that sharing recipes and data you have decoded with your teammates isn't as straightforward as copying …
Find masquerading processes using procfs.
Using procfs For Forensics and Incident Response.
Learn how to use dpkg, rpm, and other related tools to find malware on your systems.