markdown---
title: I Built a Free Tools Directory for Linux Users Who Are Tired of Googling the Same Commands
published: true
description: Five interactive bash tools I built to stop wasting time on problems I'd already solved. No signup, no limits, no "learn bash in 30 days" — just the button you needed 10 minutes ago.
tags: bash, linux, opensource, webdev
canonical_url: https://bashsnippets.xyz/tools/
I Google "bash remove file extension" at least once a month.
Every time I need ${filename%.txt} I have to look it up. I've written that exact syntax probably 40 times across different scripts. My brain refuses to memorize it. And every time I need it again, I open a browser tab, type the question, scroll past three blog posts with 800-word intros about "the power of parameter expansion," and finally find the one-liner I need.
It takes 90 seconds. It shouldn't.
So I started building tools that solve problems at the exact moment I'm annoyed enough to fix them.
The Problem with Most Bash Resources
When you're debugging a script that's failing right now, you don't want a tutorial. You don't want to "learn the fundamentals." You want the answer in the next 30 seconds or you're going to lose your mind.
Most bash resources are written for people who have time. They assume you're sitting down with a cup of coffee to learn bash scripting as a general topic. They start with "What is bash?" and work up from there.
But that's not how real work happens.
Real work is: your cron job didn't run and you have no idea why. Your script is exiting with code 127 and you don't know what that means. You need to make a file executable for the owner but not readable by others and you can't remember if that's chmod 700 or chmod 600 or something else entirely.
You're not browsing for education. You're troubleshooting something that's on fire right now.
Here's what I've built so far, and more importantly, why each one exists:
The problem: I wasted 2 hours on a "command not found" error that made absolutely no sense.
I had a cron job that ran rsync to back up a directory. The script worked perfectly when I ran it manually. It failed silently when cron executed it. I checked the shebang. I checked permissions. I added logging. I even ran the script as the cron user manually — still worked.
Turns out cron runs with a minimal PATH that doesn't include /usr/local/bin, where my Homebrew-installed rsync lived. The script worked in my terminal because my shell's PATH included it. It failed in cron because cron's PATH didn't.
I spent those 2 hours Googling variations of "bash script works manually fails in cron" before I finally found a StackOverflow post explaining PATH inheritance in cron environments.
After I fixed it, I thought: "This is going to bite me again in 6 months when I've forgotten the lesson."
So I built the PATH debugger. You paste your $PATH, and it shows you:
- Which directories actually exist on your system
- Which are missing or broken
- A cleaned
export PATH=... line you can copy
- Why common commands might fail (
rsync not in any directory, python shadowed by a version in the wrong spot, etc.)
Now when someone tells me their script works manually but not in cron, I send them the tool. Problem identified in 30 seconds instead of 2 hours.
The problem: I got cron syntax wrong three times in one week and broke production backups.
First attempt: * 2 * * * (which runs every minute during the 2am hour, not once at 2am).
Second attempt: Forgot to make the script executable, so cron failed silently.
Third attempt: The script ran but wrote to the wrong path because I didn't know cron doesn't expand ~.
After the third time I had to SSH into the server at 6am to figure out why backups hadn't run, I built the cron builder.
You pick the schedule visually (daily at 3am, every 6 hours, first Monday of the month, whatever), and it gives you:
- The exact cron expression
- The next 10 run times so you can verify it's actually what you want
- A production-safe wrapper that includes logging, lock files, and absolute paths
- A checklist of things that break (executable bit,
PATH, environment variables)
Now I don't play cron roulette. I use the tool, copy the output, paste it into crontab -e, and it works the first time.
The problem: I cannot hold octal permissions in my head.
Every single time I need to set file permissions, I have to look up whether 700 is owner-only or if that's 600, and whether 644 is the one where others can read or if I'm thinking of 755.
I've been using Linux for years. This should be automatic by now. It's not.
So I built a checkbox interface. You click read/write/execute for owner/group/others, and it shows you:
- The octal number (
chmod 755 script.sh)
- The symbolic syntax (
chmod u=rwx,g=rx,o=rx script.sh)
- What those permissions actually mean in plain English
I've used this tool probably 30+ times since I built it. It's bookmarked on my work machine. I am not embarrassed about this.
The problem: Your script exits with code 127, and you have no idea what that means.
Exit codes are one of those things where everyone knows 0 means success and 1 means generic failure, but beyond that it's trivia. What's 126? What's 130? What's the difference between 1 and 2?
The tool shows you:
- What the code means (127 = command not found, 126 = permission denied, 130 = terminated by Ctrl+C)
- Common causes
- Copy-paste error handlers in three styles:
if/else, case, and inline ||
Now when a script fails with a cryptic exit code, you don't have to Google "bash exit code 127" and scroll through five blog posts. You paste the number, get the answer, copy the error handler, move on.
The problem: Every script starts with the same 15 lines, and I'm tired of typing them.
Shebang. set -euo pipefail. CHECK and CROSS variables. A header comment explaining what the script does. Sometimes argument parsing. Sometimes a trap handler for cleanup.
I was copy-pasting from an old script, deleting the parts I didn't need, and modifying what was left. That's fine for one script. It's tedious when you're writing scripts regularly.
So I built a generator. You pick what you need (strict error handling, argument parsing, logging, cleanup trap), optionally inject a snippet from the library (disk space check, file backup, whatever), and it gives you a complete .sh file ready to edit.
No blank file. No "where do I even start." Just a working script skeleton you can build on top of.
What's Coming Next
I'm not building "every bash tool imaginable." I'm building the ones I keep needing.
Next up:
Shellcheck Error Decoder — I'm tired of seeing SC2086 in my terminal and having to open a browser tab to figure out what the hell it means. Every modern bash tutorial tells you to run shellcheck. Every CI pipeline includes it. But the error codes are cryptic. This tool will decode them on the spot.
Bash String Manipulation Builder — The ${filename%.txt} problem I mentioned at the start. Parameter expansion is powerful and completely impossible to remember. Click what you want (remove extension, extract directory, lowercase the string), get the syntax.
Process Signal Reference — I have a note in my phone that says "SIGTERM = 15, SIGKILL = 9, SIGHUP = 1" because I can never remember which is which when a process won't die. Time to build the thing.
Maybe eventually if traffic justifies:
- Bash Array Builder (because array syntax is different from literally every other language)
- Redirect & Pipe Visualizer (I still think for 3 seconds every time I see
2>&1)
The Philosophy
These tools exist at the exact moment of maximum frustration.
You're not browsing the site for fun. You're here because something is broken right now and you need a fix right now.
That's the filter: If the tool solves a problem that's currently on fire, I build it. If it's "nice to know" or "general education," it doesn't make the cut.
I'm not trying to teach you bash. I'm trying to save you the 90 seconds you'd spend Googling the same thing you've Googled six times before.
Why I'm Building This in Public
I could keep these tools to myself. They're mostly for me anyway — shortcuts to problems I keep running into.
But I remember being the person who spent 2 hours on a PATH issue that should've taken 2 minutes. I remember breaking production cron jobs because the syntax is impossible to remember. I remember the feeling of Googling the same bash question for the third time this month and wondering if I'm just bad at this.
You're not bad at this. Bash syntax is inconsistent and hard to memorize, and the official documentation is written for people who already know what they're looking for.
If these tools save someone else those 2 hours or that feeling, that's worth making them public.
All tools are free, no signup, no limits:
bashsnippets.xyz/tools
And if you need actual scripts — monitoring, backups, automation, error handling — all the snippet pages are here:
bashsnippets.xyz/snippets
If you've built tools to solve your own repetitive problems, or if you have a bash thing