Topics
Security
Data formats
Text
Linux and network
Encoding and conversion
Where to start
First steps
15 stages · From system basics and command input to navigation, files, text, and pipelines.
Track map 11 tracks · 123 stages
Difficulty
New labs
Sections 183 articles
Command index 432
Popular
Bash: text processing and scripts
Read the output
set -e
#!/bin/bash set -e if curl -sf -o /dev/null http://127.0.0.1:8080/health; then echo "up" else echo "down" fi echo "after"