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Removed numerous broken resources from README #50

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21 changes: 2 additions & 19 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -533,10 +533,6 @@ Useful resources:
- `more`: used to display the text in the terminal window in pager form.
- `less`: used to view the text in the backward direction and also provides single line movement.

Useful resources:

- [Viewing text files from the shell prompt](https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/Step_by_Step_Guide/s1-viewingtext-terminal.html)

</details>

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Expand Down Expand Up @@ -652,7 +648,6 @@ chmod a+x /path/to/file
- `w` - for write permission

Useful resources:
- [How to Set File Permissions Using chmod](https://www.washington.edu/computing/unix/permissions.html)
- [What does "chmod +x your_file_name" do and how do I use it?](https://askubuntu.com/questions/443789/what-does-chmod-x-filename-do-and-how-do-i-use-it)

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Expand Down Expand Up @@ -1139,10 +1134,6 @@ Operating at the network layer and transport layer of the TCP/IP protocol stack,
- **destination port (TCP or UDP header, transport layer)** - the destination port number indicates a port that the packet is sent to. Each service on the destination host listens to a port. Some well-known ports that might be filtered are 20/TCP and 21/TCP - ftp connection/data, 23/TCP - telnet, 80/TCP - http, and 53/TCP - DNS zone transfers.
- **connection status (TCP header, transport layer)** - the connection status tells whether the packet is the first packet of the network session. The ACK bit in the TCP header is set to “false” or 0 if this is the first packet in the session. It is simple to disallow a host from establishing a connection by rejecting or discarding any packets which have the ACK bit set to "false" or 0.

Useful resources:

- [Building Internet Firewalls - Packet Filtering](http://web.deu.edu.tr/static/oreily/networking/firewall/ch06_01.htm)

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Expand Down Expand Up @@ -2977,6 +2968,7 @@ Examples of http/https log management tools:
Useful resources:

- [Best Log Management Tools: 51 Useful Tools for Log Management, Monitoring, Analytics, and More](https://stackify.com/best-log-management-tools/)
- [Top Log Management Tools: 60 Tools for Log Management: Including Open Source & Free Solutions](https://logit.io/blog/post/log-management-tools)

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Expand Down Expand Up @@ -3248,10 +3240,6 @@ This is a combination of the above two, where the key idea is that Operating Sys

This is used by Microsoft's NT kernels, all the way up to the latest Windows version.

Useful resources:

- [An Introduction to Kernels. The Heart of Computing Devices. (original)](https://keetmalin.wixsite.com/keetmalin/single-post/2017/08/24/An-Introduction-to-Kernels-The-Heart-of-Computing-Devices)

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Expand All @@ -3269,7 +3257,7 @@ export LD_LIBRARY_PATH="/list/of/library/paths:/another/path" ./program

Useful resources:

- [How to correctly use LD_LIBRARY_PATH](http://wiredrevolution.com/system-administration/how-to-correctly-use-ld_library_path)
- [How to correctly use LD_LIBRARY_PATH](https://titanwolf.org/Network/Articles/Article?AID=b8d988da-eded-46c7-bea0-67412ba3a1e1)

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This link is not broken. Do you want to update this @Ebennetteng


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Expand Down Expand Up @@ -3500,7 +3488,6 @@ The interrupt handler must run quickly, because it's preventing any other interr
Useful resources:

- [How is an Interrupt handled in Linux? (original)](https://unix.stackexchange.com/questions/5788/how-is-an-interrupt-handled-in-linux)
- [Interrupts and Interrupt Handlers](https://notes.shichao.io/lkd/ch7/)

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Expand Down Expand Up @@ -4973,10 +4960,6 @@ or
ip route add 192.168.200.0/24 via 127.0.0.1
```

Useful resources:

- [The difference between iptables DROP and null-routing.](https://www.tummy.com/blogs/2006/07/27/the-difference-between-iptables-drop-and-null-routing/)

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