Linux Operating Skills Supplements

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This blog post will record the difficulties and solutions I encountered in the use of Linux, collect some intractable diseases and corresponding solutions, and also include strange tricks for Linux operation. Long-term records and updates.

• 1. The serial port is locked and cannot be accessed
  
  • error log: Device /dev/ttyUSB0 is locked.
  • words: sudo rm -r /var/lock/LCK..ttyUSB0
• 2. lsFilter the content you need in the list
  
  • For example, to filter TTL serial devicesls /dev | grep ttyUSB
• 3.