trim ffmpeg -i my_video.mp4 -ss 00:00:15 -t 00:00:10 -async -1 clip.mp4 https://unix.stackexchange.com/questions/28803/how-can-i-reduce-a-videos-size-with-ffmpeg reencode lower qulaity crf 18-28 is sane, lower crf is higer quality ffmpeg -i input -c:v libx264 -preset slow -crf 22 -c:a copy output.mkv https://trac.ffmpeg.org/wiki/Encode/H.264
upower -i /org/freedesktop/UPower/devices/battery_BAT0
sudo hdparm -tT --direct /dev/sda
https://www.thomas-krenn.com/de/wiki/TCP_und_UDP_Netzwerk_Performance_mit_iperf_messen
Server 1 TCP: [root@server1 ~]# iperf -s Client 2 TCP: [root@server2 ~]# iperf -c 192.168.255.1
Server 1 UDP: [root@server1 ~]# iperf -s -u client 2 UDP: [root@server2 ~]# iperf -c 192.168.255.1 -u -b 1000M
remove all tagsexept date from JPEG: exiftool -all= -tagsFromFile @ -*date* *.jpg
netdiscover -i eth0 -r 192.168.178.0/24
monitor mode https://www.elektronik-kompendium.de/sites/net/2008051.htm
https://www.aircrack-ng.org/doku.php?id=newbie_guide#sniffing_ivs
mac adresse ändern http://www.easy-network.de/mac-adresse-unter-linux-aendern.html
https://www.aircrack-ng.org/doku.php?id=newbie_guide#sniffing_ivs