mirror of
https://github.com/Brandon-Rozek/website.git
synced 2024-11-25 01:26:30 -05:00
30 lines
No EOL
549 B
Markdown
30 lines
No EOL
549 B
Markdown
---
|
|
date: 2020-12-15 14:25:11
|
|
draft: false
|
|
medium_enabled: true
|
|
medium_post_id: ac38c9d9d896
|
|
tags:
|
|
- Bash
|
|
title: 'Quick Bash: Check Argument Count'
|
|
---
|
|
|
|
I've been writing more bash scripts recently and I noticed that I often check for the number of arguments before validating them in my scripts. I'll share that small snippet here for my future self.
|
|
|
|
```bash
|
|
#!/bin/sh
|
|
|
|
set -o errexit
|
|
set -o nounset
|
|
set -o pipefail
|
|
|
|
show_usage() {
|
|
echo "Usage: script [arg1]"
|
|
exit 1
|
|
}
|
|
|
|
# Check argument count
|
|
if [ "$#" -ne 1 ]; then
|
|
show_usage
|
|
fi
|
|
|
|
``` |