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๐Ÿ“ Filesystem Basics

Linux uses a hierarchical filesystem starting at / (root).

๐Ÿงฉ Important Directories

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/home       user files
/etc        configuration
/var        logs, databases, runtime data
/usr        programs and libraries
/bin        essential commands
/sbin       system commands
/opt        optional software

๐Ÿ”ง Useful Commands

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lsblk       # list disks
df -h       # disk usage
du -sh *    # folder sizes

๐Ÿ“ฆ Creating Files & Folders

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mkdir myfolder
touch file.txt
rm file.txt
rm -r folder

๐Ÿšจ Safety Tips

  • Never run rm -rf /
  • Always doubleโ€‘check paths
  • Use ls before deleting anything