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Navigating File System / Linux filetypes/shaare/wnWuOQ

  • linux
  • linux

  • ls -l → List
  • pwd → Print working directory

dr-xr-xr-x
|
directories


-rw-r--r--
|
file


Linux File Types

Symbol Type
- Regular file
d Directory
l Link
c Special file or device file
s Socket → Network communication / process data between external processes
p Named pipe → FIFO → First In First Out, data between internal processes
b Block device

Inode = Pointer or number of a file on a hard disk.

8 months ago Permalien
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  • Special Permissions (SetUID, SetGID, Sticky Bit) : chmod u+s xyz.sh → add SetUID (user-level special permission) chmod g+s xyz.sh → add SetGID (group-level special permission) chmod u-s xyz.sh → remov...
  • System Run Level and Boot Process : System Run Level init 0 → shutdown init 1 → single user mode → troubleshoot init 6 → reboot the system init 2 → multiuser without networking init 3 →...
  • Disk usage, logging, shutdown, hostname : Disk and Memory Info df → disk partition info df -h → human-readable format du → size of file/directory free → memory info cat /proc/cpuinfo → CPU in...
  • Computer Storage / Disk Partition : Computer Storage Local → RAM / HDD / SSD DAS (Direct Attached Storage) USB HDD / DVD SAN (Storage Area Network) through iSCSI cable or fiber ...
  • Package Management : System Updates & Software Install dnf (yum) → RedHat → /etc/yum.repos.d apt-get → Debian rpm → RedHat package management standalone package to ...


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