Bash Script to Rename Files Recursively With Regex and Dry-Run Preview You need to rename a few hundred files across nested directories, the pattern is regular enough to describe with a regex, and you would rather not find out you got it wrong after the fact. The one-liner that gets you a safe preview: find…
Bash Script to Batch Rename Files With Spaces to Underscores Recursively (2026) Filenames with spaces break more automation than almost anything else: xargs splits them, for f in $(ls) tears them apart, and half your CI pipeline quietly does the wrong thing. The fix is one recursive pass that swaps every space for an underscore,…
How to Monitor a Directory for New Files in Bash and Run a Command Automatically You drop a file into a watched folder, nothing happens, and you spend an hour blaming your script when the real problem is that the file was written in two chunks and your handler fired on the first, half-written one….
Bash Script to Rename Files in Bulk With Regex and a Dry-Run Preview You have 4,000 files named like IMG_20260314_final_v2.jpg and you need them to be 2026-03-14-final-v2.jpg. The one-liner that does the work without touching a single file is the dry run: find . -maxdepth 1 -type f -name ‘*.jpg’ -print0 \ | while IFS=…
I spent last Tuesday morning debugging a deployment that failed because someone had manually edited a config file on the production server instead of using our automation pipeline. The fix took ten minutes. The root cause? Nobody had a script to validate the environment before the deploy ran. That’s the kind of problem a good…
Network connectivity issues can cripple productivity, but you don’t need expensive tools to fix them. Network diagnostic scripts automate the detection of latency, packet loss, DNS failures, and bandwidth bottlenecks—saving you hours of manual troubleshooting. By using simple Bash, Python, or PowerShell scripts, you can pinpoint problems in seconds, generate reports, and even schedule checks….
A Bash script is a plain text file containing a series of commands that automate repetitive tasks on Linux, macOS, or Windows (via WSL). To write your first script, create a file ending in `.sh`, add `#!/bin/bash` at the top, write your commands, save it, then make it executable with `chmod +x script.sh` and run…
SSH keys provide passwordless, encrypted access to remote servers using a public-private key pair. To set them up, generate a key pair on your local machine with `ssh-keygen -t ed25519`, copy the public key to your server using `ssh-copy-id user@server_ip`, and disable password authentication in `/etc/ssh/sshd_config` for enhanced security. This guide walks you through the…
Monitoring Linux server performance doesn’t require expensive tools or complex setups. You can build lightweight, effective monitoring scripts using built-in Linux commands like `top`, `free`, `df`, and `uptime`. These scripts give you real-time visibility into CPU load, memory usage, disk space, and uptime—all without third-party dependencies. In this guide, you’ll learn to create, automate, and…
Automating server backups with Bash scripts is simple: write a script that uses `tar` or `rsync` to compress your data, then schedule it with `cron`. This approach ensures your files are backed up daily or hourly without manual effort. You can add retention policies, remote storage uploads (e.g., S3 or SFTP), and email notifications. Below,…