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Linux cheat sheet

  • Find the number of files in a folder
    ls | wc -l
  • Find the size of folders
     du -h --max-depth=1 foldername
  • Find and remove empty folders
    find . -type d -empty -exec rmdir {} \;
  • Kill a zombie process
    • To find the ppid of zombie process
      ps -aux |grep -w Z
      kill -9 ppid
    • if not working, kill the parent process
      cat /proc/{pid of zombie}/status | grep -i ppid
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