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问题 i'm trying to install fastlane for my ios app but when i'm trying to install RVM, i'm facing issues. My command is gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113************* 7D2BAF1CF37B13E2069D69561************* 回答1: Please use hkp://ipv4.pool.sks-keyservers.net instead of hkp://keys.gnupg.net type this command gpg --keyserver hkp://ipv4.pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113************* 7D2BAF1CF37B13E2069D69561************* 回答2: TL;DR;

问题 i'm trying to install fastlane for my ios app but when i'm trying to install RVM, i'm facing issues. My command is gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113************* 7D2BAF1CF37B13E2069D69561************* 回答1: Please use hkp://ipv4.pool.sks-keyservers.net instead of hkp://keys.gnupg.net type this command gpg --keyserver hkp://ipv4.pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113************* 7D2BAF1CF37B13E2069D69561************* 回答2: TL;DR;

问题 I've installed XAMPP on Ubuntu in '/opt/lampp' directory and would like to set up some VirtualHosts. Apache Virtual Host tutorial instructs to place <VirtualHost *:80> ... </VirtualHost> code in '/etc/apache2/sites-available/[virtualhostname].conf'. The problem is that I don't have 'apache2' folder in '/etc'. I also don't have 'sites-available' directory in '/opt/lampp/apache2'. I have '/opt/lampp/etc/httpd.conf' and '/opt/lampp/etc/extra/httpd-vhosts.conf' files though. Which ones shall I

问题 I've installed XAMPP on Ubuntu in '/opt/lampp' directory and would like to set up some VirtualHosts. Apache Virtual Host tutorial instructs to place <VirtualHost *:80> ... </VirtualHost> code in '/etc/apache2/sites-available/[virtualhostname].conf'. The problem is that I don't have 'apache2' folder in '/etc'. I also don't have 'sites-available' directory in '/opt/lampp/apache2'. I have '/opt/lampp/etc/httpd.conf' and '/opt/lampp/etc/extra/httpd-vhosts.conf' files though. Which ones shall I

问题 I've installed XAMPP on Ubuntu in '/opt/lampp' directory and would like to set up some VirtualHosts. Apache Virtual Host tutorial instructs to place <VirtualHost *:80> ... </VirtualHost> code in '/etc/apache2/sites-available/[virtualhostname].conf'. The problem is that I don't have 'apache2' folder in '/etc'. I also don't have 'sites-available' directory in '/opt/lampp/apache2'. I have '/opt/lampp/etc/httpd.conf' and '/opt/lampp/etc/extra/httpd-vhosts.conf' files though. Which ones shall I

问题 I have a USB Host Mode application that works perfectly. I plug in the device, Android pops up the Allow the app APPNAME to access the USB device? permission request window, I check the Use by default for this USB device tick box and tap OK , then up comes my app and it communicates with the USB device perfectly. BUT... Then I unplug the device and plug it back in. Android pops up the Allow the app APPNAME to access the USB device? dialog again. WTH? I've already told Android to do this by

问题 I have a USB Host Mode application that works perfectly. I plug in the device, Android pops up the Allow the app APPNAME to access the USB device? permission request window, I check the Use by default for this USB device tick box and tap OK , then up comes my app and it communicates with the USB device perfectly. BUT... Then I unplug the device and plug it back in. Android pops up the Allow the app APPNAME to access the USB device? dialog again. WTH? I've already told Android to do this by

问题 I have a USB Host Mode application that works perfectly. I plug in the device, Android pops up the Allow the app APPNAME to access the USB device? permission request window, I check the Use by default for this USB device tick box and tap OK , then up comes my app and it communicates with the USB device perfectly. BUT... Then I unplug the device and plug it back in. Android pops up the Allow the app APPNAME to access the USB device? dialog again. WTH? I've already told Android to do this by

问题 In the first if we want the hostname to appear, which is the 5th field from a file. Then if the IP we give to the host command does not exist, then the command returns message 3 (NXDOMAIN). The script should recognize if the command was "not found". In this case it will must simply print (-). #!/bin/bash ip="$1" if [ "$ip" ] ; then host "$ip" | cut -d' ' -f5 elif [[ "$ip" =~ "[3(NXDOMAIN)]$" ]] ; then echo "-" fi Do u have any solution on this exercise? 回答1: You're not testing the result of

问题 I want to do something special when my PowerShell script is being executed by Windows Terminal and not the normal PowerShell command line or ISE. How to determine that? I checked some built-in variables like $Host and can't find related information. 回答1: Disclaimer: Windows Terminal is still in development at this time of writing and this information could change for the stable release. Look for the $env:WT_SESSION environment variable - this looks to be set to a GUID in a Windows Terminal