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Why does InetAddress.isReachable return false, when I can ping the IP address?
...hine (which we have most of the time).
private static boolean isReachable(String addr, int openPort, int timeOutMillis) {
// Any Open port on other machine
// openPort = 22 - ssh, 80 or 443 - webserver, 25 - mailserver etc.
try {
try (Socket soc = new Socket()) {
so...
Vagrant reverse port forwarding?
...
When you run vagrant ssh, it's actually using this underlying command:
ssh -p 2222 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o LogLevel=ERROR -o IdentitiesOnly=yes -i ~/.vagrant.d/insecure_private_key vagrant@127.0.0.1
SSH supports forwarding ports in the direction you ...
How to install the Raspberry Pi cross compiler on my Linux host machine?
...ow you should be able to compile your cmake programs simply by adding this extra flag: -D CMAKE_TOOLCHAIN_FILE=$HOME/raspberrypi/pi.cmake.
Using a cmake hello world example:
git clone https://github.com/jameskbride/cmake-hello-world.git
cd cmake-hello-world
mkdir build
cd build
cmake -D CMAKE_TO...
grant remote access of MySQL database from any IP address
I am aware of this command:
21 Answers
21
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虚拟机ubuntu与宿主机NAT方式设定静态IP共享上网 - 更多技术 - 清泛网 - 专...
虚拟机ubuntu与宿主机NAT方式设定静态IP共享上网前阵子虚拟机安装Ubuntu 10.10后一直不能上网，折腾了好几天终于可以了，在这里写个记录备忘哈哈ubuntu安装参考 点击打开链接http: ...前阵子虚拟机安装Ubuntu 10.10后一直不能上...
https URL with token parameter : how secure is it?
...ople having access to all the tokens.
Additionally the URL with the query string would be saved in your user's history, allowing other users of the same machine to access the URL.
Finally and what makes this very insecure is, the URL is sent in the Referer header of all requests for any resource,...
ping response “Request timed out.” vs “Destination Host unreachable”
...n I ping an IP address, what is the difference between Request timed out and Destination host unreachable returned from the command?
...
Bash Templating: How to build configuration files from templates with Bash?
...$ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that variables do not contain ${...} strings):
#!/bin/bash
while read -r li...
Find the IP address of the client in an SSH session
...
@cwd i want to replace the ip in this command "iptables -A INPUT -s 93.203.118.251 -p tcp --destination-port 443 -j DROP" is that possible?
– wutzebaer
Aug 5 '15 at 13:00
...
How do I grab an INI value within a shell script?
...\{} ) # convert text2function (2)
ini=( ${ini[*]/%\} \)/\}} ) # remove extra parenthesis
ini[0]="" # remove first element
ini[${#ini[*]} + 1]='}' # add the last brace
eval "$(echo "${ini[*]}")" # eval the result
}
cfg_writer ()
{
IFS=' '$'\n'
fun="$(declare -F)"
fun="...