Category: Uncategorized
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Record screen capture with audio in FreeBSD with ffmpeg
This command can be used: ffmpeg -video_size 1920×1080 -framerate 25 -f x11grab -i :0.0+0,0 -f oss -i /dev/dsp5.0 -filter:a “asetpts=N/SR/TB” output.mp4 Command above assumes that microphone is at /dev/dsp5.0 (you can check that with cat /dev/sndstat), and you can adjust microphone volume with mixer -f /dev/mixer5 mic 100.
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How to show hardware information in FreeBSD
Use dmidecode (It is in /usr/ports/sysutils/dmidecode).
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How to see all certificates that web server sends
It can be done using openssl:openssl s_client -connect SERVER:PORT -showcerts
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Command to take screenshot
You can use scrot -z ‘/tmp/Screenshot from %F %H-%M-%S.png’ (you might need to install scrot first).
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Using Android phone for network access on FreeBSD
Simply load urndis module# kldload urndisConnect mobile phone using USB cable with FreeBSD machine. On phone choose “USB tethering” for USB. On FreeBSD machine there should appear new network device ue0 or something similarly named. You can use for example dhclient ue0 to pull IP address for that device and then you can configure routing…
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Postgres configuration
Useful query to get information about parameters: select name, context, pending_restart, setting from pg_settings