10 articles

#command-line

All articles tagged with #command-line.

Command Line Project: Automate a Task with a Script

Put it together: build a small bash script that organizes a messy folder by file type using variables, loops, conditionals, and the tools from the series.

Aug 5, 202611 min

DevOps

Shell Scripting Basics: Your First Bash Script

Turn commands into a reusable script: the shebang, variables, arguments, if statements and for loops in bash, to automate the boring stuff.

Aug 5, 202610 min

DevOps

Environment Variables and the PATH, Explained

Demystify environment variables and $PATH: how the shell finds commands, setting variables with export, and making them stick in your shell config file.

Aug 4, 20269 min

DevOps

Understanding File Permissions: chmod Explained

Make sense of Unix file permissions: reading ls -l, the read/write/execute bits for user/group/other, and changing them with chmod (symbolic and numeric).

Aug 4, 20268 min

DevOps

Searching the Command Line: grep and find

Find anything fast: grep to search inside files (with regex basics) and find to locate files by name, type or time. The search tools you'll use daily.

Aug 3, 20268 min

DevOps

Pipes and Redirection in the Shell

Chain commands like Lego: pipes (|) pass output along, and redirection (>, >>, <) sends it to files. The idea that makes the command line click.

Aug 3, 20269 min

DevOps

Creating and Managing Files in the Terminal

Work with files and folders from the command line: mkdir, touch, cp, mv, rm and rmdir, including the flags that save you (and the one that bites).

Aug 2, 20269 min

DevOps

Viewing and Editing Files in the Terminal

Read files from the command line with cat, less, head and tail, then make quick edits with nano: the everyday tools for inspecting logs and config.

Aug 2, 20268 min

DevOps

Command Line Navigation: pwd, ls and cd

Move around the filesystem in the terminal: pwd, ls and its flags, cd, and absolute vs relative paths, with a diagram of the directory tree.

Aug 1, 20267 min

DevOps

Why the Command Line? A Developer's Superpower

What the terminal and shell are, why developers live in them, and how the command line makes you faster. The mental model before the commands.

Aug 1, 20268 min