this certificate was signed by an unknown authority

The problem was missing apple WWDR intermediate certificate.

We must also install the WWDR intermediate certificate issued by Apple’s worldwide developer relations. It can be downloaded from the portal or directly at http://developer.apple.com/certificationauthority/AppleWWDRCA.cer Make sure you add this to your keychain as well.

iphone disabe autoupdate

add to /etc/hosts

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127.0.0.1 mesu.apple.com

exif commands

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#exif commands
#remove gps info of jpg
exiftool -gps:all= *.jpg
exiftool -geotag= foo.jpg
#remove exif info
exiftool -all= foo.jpg

Error parsing file /Applications/MacPorts/X11.app

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#Error parsing file /Applications/MacPorts/X11.app
sudo port  uninstall xorg*
sudo port install -v xorg

Error parsing file /Applications/MacPorts/python27

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#Error parsing file /Applications/MacPorts/python27
sudo port  uninstall python27
sudo port  install -v python27

预约助手 for 就医160 ios

macport update outdate exclude bitcoin

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sudo port upgrade outdated and not bitcoin*

raspberry enable sshd without screen or keyboard

If you want to enable SSH, all you need to do is to put a file called ssh in the /boot/ directory. The contents of the file don’t matter: it can contain any text you like, or even nothing at all. When the Pi boots, it looks for this file; if it finds it, it enables SSH and then deletes the file. SSH can still be turned on or off from the Raspberry Pi Configuration application or raspi-config; this is simply an additional way to turn it on if you can’t easily run either of those application

refrence:https://www.raspberrypi.org/blog/a-security-update-for-raspbian-pixel/

How to setup SSH public Key (Electra “dropbear”)

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cp ~/.ssh/authorized_keys /bootstrap/etc/dropbear/authorized_keys

Monitor the core temperature of your Raspberry Pi.

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alias temp="/opt/vc/bin/vcgencmd measure_temp"

how to get myip?

httpbin

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curl http://httpbin.org/ip

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{
  "origin": "218.117.10.26"
}

icanhazip

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curl http://icanhazip.com

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"218.117.10.26"

curl6

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curl https://wirelessbox.net/curl6/ip

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{"origin":"218.17.107.26"}