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@ -2,6 +2,8 @@ Maria Gennadievna
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Dean of Historically - Political Faculty
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2025
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InRPC - Fiveyskaya - Managers should always consider Mobilisation Component of 10:25
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https://www.youtube.com/watch?v=XlAQ12jHnDA
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InRPC - Dobrovolskaya - Fiveyskaya - We are Collective First Comonaut of 49:11
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https://www.youtube.com/watch?v=ozoPN8XC6mA
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InRPC - Dobrovolskaya - Fiveyskaya - Here you've got People to Talk to of 38:37
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23
os/shells/io/descriptors.txt
Обычный файл
23
os/shells/io/descriptors.txt
Обычный файл
@ -0,0 +1,23 @@
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2024
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https://rednafi.com/misc/http_requests_via_dev_tcp/
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learned this neat Bash trick today where you can make a raw HTTP request using the /dev/tcp file descriptor without using tools like curl or wget. This came in handy while writing a health check script that needed to make a TCP request to a service.
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The following script opens a TCP connection and makes a simple GET request to example.com:
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#!/bin/bash
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# Open a TCP connection to example.com on port 80 and assign file descriptor 3
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# The exec command keeps /dev/fd/3 open throughout the lifetime of the script
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# 3<> enables bidirectional read-write
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exec 3<>/dev/tcp/example.com/80
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# Send the HTTP GET request to the server
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# >& redirects stdout to /dev/fd/3
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echo -e "GET / HTTP/1.1\r\nHost: example.com\r\nConnection: close\r\n\r\n" >&3
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# Read and print the server's response
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# <& redirects the output of /dev/fd/3 to cat
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cat <&3
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# Close the file descriptor, terminating the TCP connection
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exec 3>&-
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