A .sh filename alone does not prove which syntax a script needs. I love the puzzle in the interpreter line: /bin/sh and /bin/bash express different expectations. You can place the shell in a command-line session and see where it fits. Then distinguish its role from the terminal emulator’s. What is a Linux shell? A Linux
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FTP mkdir creates a directory on the server, while Linux mkdir creates one on your machine. I’m curious about where the FTP prompt points when you use commands like these. At the FTP prompt, trace how the client exchanges commands and replies with the server. Then follow the separate data connection that carries listings and
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On RHEL 8, YUM is based on DNF technology. I’m curious how that fits with the current yum manual redirecting to the DNF command reference. Before choosing a package operation, get a handle on yum’s role in package management. See how it searches repositories and resolves dependencies in a transaction. What is the yum command?
The yum command in Linux – A Cheat sheet Read More »
UDP does not use TCP’s listening handshake, so its rows can show UNCONN while the socket is available to receive datagrams. I find the contrast with TCP’s LISTEN state striking. Read the socket rows and notice the state each one reports. Then look at the local and peer addresses in a row with a connection.
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A versioned source-built interpreter can sit beside the distribution’s unversioned python3. I’m curious how a source install gives the newer interpreter its own path without taking that command from system tools. Look at what changes when you build CPython from its source archive and choose where to install it. Then consider how its path fits
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A shell can send SIGHUP when a terminal session closes. I’m glad nohup starts a command with SIGHUP set to ignored. The shell’s ampersand backgrounds a command and returns the prompt. You can pair it with nohup when a job needs both behaviors. What is the nohup command? The nohup command starts a utility with
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A Linux CAD app can make a 2D drawing or a parametric 3D model. The job matters more than a universal ranking, and that difference interests me. Some tools instead generate solids from code. Choose by the drawing you need to make. What Makes a CAD App Fit Linux? Computer-aided design (CAD) software creates or
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Plain ls omits names that begin with a dot, but -a includes them. I’m fascinated by the other distinction: a long listing’s directory size describes its entry, not the space used by files beneath it. See what ls lists by default. Give ls a directory operand to list entries somewhere else. What is the ls
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I wonder: will Yum remove only the package you name? Its proposed transaction can also include packages that depend on the target or dependencies it considers unused. Examine the Yum remove operation in relation to the installed package set it can change. Notice what the request asks Yum to resolve. What is YUM package removal?
How to uninstall packages using YUM command on Linux? Read More »
What does dnf autoremove target? I like the sharp distinction: it targets unneeded dependency packages, not the named application you choose to uninstall. Place DNF’s package work in the context of RPM software management. Trace how DNF resolves dependencies and downloads packages from configured repositories. What is DNF? DNF manages RPM software on distributions such
The dnf package manager in Linux – A complete reference Read More »