IntroToLinux

10. Troubleshooting

Common Issues:

Broken Pipe Errors:

• Occur when reader terminates before writer
• Usually harmless in interactive use

Permission Denied:

# Can't write to file
echo "test" > /etc/hosts  # Permission denied

# Solution: use sudo
echo "test" | sudo tee -a /etc/hosts

No Output from Pipeline:

• Check each command separately
• Use intermediate files for debugging

# Debug pipeline step by step
command1 > temp1.txt
command2 < temp1.txt > temp2.txt
command3 < temp2.txt

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