Differences

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--- linux:basics:start [2026/06/11 13:41] – created titannet
+++ linux:basics:start [2026/06/11 14:11] (current) – titannet
@@ Line 8: / Line 8: @@
   - GRUB
   - KERNEL
-  - SYSTEMD
+  - Init process / process 0
-    * Process 0
+    * systemd
   - User Space
     * Windows manager
+===== Folder =====
+  * /bin/
+    * binaries, sbin: superuser binaries
+  * /boot/
+  * /dev/
+    * devices
+  * /etc
+  * /home/
+  * /media/
+  * /mnt/
+  * /opt/
+  * /proc/
+  * /root/
+  * /run/
+  * /srv/
+  * /sys/
+  * /usr/
+  * /var/
+===== File/Folder permissions =====
+| type | [special] ||| owner ||| group ||| all |||
+| d,-,l | SUID | SGID | Sticky |r | w | x | r | w | x | r | w | x |
+| | 4 | 2 | 1 | 4 | 2 | 1 | 4 | 2 | 1 | 4 | 2 | 1 |
+===== File types =====
+  * First four bytes ('Magic Bytes') define file type
+===== IPC =====
+| 1 | sighup | stop terminal connection |
+| 2 | sigint | interrupt terminal connection |
+| 9 | sigkill | |
+| 15 | sigterm | |
+| 18 | sigcont | |
+| 19 | sigstop | |