87 lines
3.6 KiB
Org Mode
87 lines
3.6 KiB
Org Mode
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#+title: home computer info
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* router
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** wifi
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| category | value |
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|-----------+--------------|
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| ssid | ronny-wifi |
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| password | 2reishit2ara |
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| router-ip | 192.169.0.1 |
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** internet
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| category | value |
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|---------------------+-----------------|
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| internet ip address | 94.159.253.187 |
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| subnet mask | 255.255.255.255 |
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| default gateway | 82.102.129.99 |
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| primary dns | 80.179.52.100 |
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| secondary dns | 80.179.55.100 |
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** dhcp
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| category | value |
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|-----------------+-----------------------------|
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| dhcp server | enabled |
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| ip address pool | 192.168.0.2 - 192.168.0.253 |
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* raspberry-pi
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| category | value |
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|----------+--------------|
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| username | ronny |
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| password | 2reishit2ara |
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| hostname | ronberrypi |
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** to be able to ping the raspberry-pi
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#+begin_src bash
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ping ronberrypi.local
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#+end_src
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* storage
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** External Hard Drive Info
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This table keeps track of the Raspberry Pi's external storage setup.
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| Device | Filesystem | Label | Mount Point | Mount Options |
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|-----------+------------+---------+--------------+----------------------------------------|
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| /dev/sda2 | ext4 | storage | /mnt/storage | defaults,noatime,nodiratime,commit=600 |
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| Device | UUID |
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|-----------+--------------------------------------|
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| /dev/sda2 | 5bb54030-2df7-4798-afb5-bd2878ae0def |
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*** Hard Drive commands
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| purpose | command |
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|----------------------+-----------------------|
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| find the UUID | lsblk -f |
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| verify mount point | df -h : grep storage |
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| check filesystem typ | sudo blkid / dev/sda2 |
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*** Mount Options Explanation
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| Option | Description |
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|-------------------+------------------------------------------------------------------------------|
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| defaults | Uses the default options: `rw, suid, dev, exec, auto, nouser, async`. |
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| rw | Mounts the filesystem as **read/write** (default). |
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| ro | Mounts the filesystem as **read-only**. |
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| noexec | Prevents execution of binaries on the mounted filesystem. |
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| exec | Allows execution of binaries (default). |
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| nosuid | Blocks `setuid`/`setgid` binaries from running. |
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| nodev | Ignores device files (e.g., `/dev/null`) on this filesystem. |
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| noatime | **Disables access time updates** to improve performance. |
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| nodiratime | Disables directory access time updates (for performance). |
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| relatime | **Updates access time only if the file is modified**, balancing performance. |
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| strictatime | **Always updates access time** (not recommended for performance reasons). |
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| sync | Writes changes to disk **immediately** instead of caching them. |
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| async | Writes changes to disk **asynchronously** (default, better performance). |
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| commit=600 | Delays disk writes for **600 seconds (10 minutes)**, reducing wear. |
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| nofail | Allows booting even if the mount fails (useful for external drives). |
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| errors=remount-ro | If an error occurs, remounts the filesystem as **read-only**. |
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* installed apps via brew
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- kubuntu
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- to read ext4
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