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
#!/bin/bash dir=$HOME/old reports echo "[$dir]"
reports: command not found
[]
[/home/student/old reports]
[/home/student/old]