ifconfig

http://www.tecmint.com/ifconfig-command-examples/

1. View All Network Setting

2. Display Information of All Network Interfaces

3. View Network Settings of Specific Interface

4. How to Enable an Network Interface

5. How to Disable an Network Interface

6. How to Assign a IP Address to Network Interface

7. How to Assign a Netmask to Network Interface



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利用ffmpeg取出ts流中特定的program

https://trac.ffmpeg.org/wiki/Map Example 8 MPEG stream selection: The tricky part with selecting from MPEG TS is it may contain multiple streams/channels, and if you are receiving "live data" just specifying an index might not work because it can change from run to run, so ffmpeg -i INPUT -map 0:6 OUTPUT # might not work the same every run, DO NOT USE THIS WAY! Assuming your file is MPEG, you can run "ffmpeg -i INPUT" (not specify an output) to see what program id's and stream id's it contains, like this example (probesize and analyzeduration specified to help "make sure" it picks up all the streams in it, may not be always needed) $ ffmpeg -probesize 50M -analyzeduration 50M -i INPUT ... Input #0, mpegts, from 'INPUT': Duration: N/A, start: 22159.226833, bitrate: N/A Program 1344 Metadata: service_name : 7 Digital service_provider: Seven Network Stream #0:0[0x401]: Video: mpeg2video (Main) ([2][0][0...
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