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Linux filesystem/shaare/WhCZtQ

  • linux
  • linux

/boot -> Grub.cfg
/root -> home of root
/dev -> system device (mouse, keyboard)
/etc -> configuration files
/bin -> /usr/bin -> everyday user commands
/sbin -> /usr/sbin -> system/filesystem commands
/opt -> third party app (not part of os)
/proc -> running process (only in memory)
/lib -> /usr/lib -> C prog lib
/tmp -> temporary folder
/home -> user dir
/var -> system logs
/run -> system daemon -> store temporary runtime / PID file
/mnt -> mount external file system
/media -> CDrom

3 months ago Permalink
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  • Systemctl, process management : Basic System Info Commands uptime → time, uptime, users, load average hostname → current hostname ip hostname → show IP & hostname uname -a → current...
  • Alias Setup : alias l="ls -al" → define alias unalias l → remove alias Persistent Alias Config User-specific: ~/.bashrc Global: /etc/bashrc Add: alias l="ls -a...
  • User management : Essential Commands: useradd, groupadd, userdel, groupdel, usermod Modify 3 files: /etc/passwd, /etc/group, /etc/shadow Create User with Custom O...
  • Shell Scripting Basics : First Line of Script #!/bin/bash → defines the shell interpreter Comments Use # for commenting Common Elements Commands: echo, cp, etc. Statement...
  • File Display Commands / Filters / Text Processing Input : File Display Commands cat → Show entire content cat -A → Show non-printable characters more → Paginate output less → Same as more but allows navigatio...


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