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How to test an Internet connection with bash?
...eturn 0 || return 1 } and then used like so: ping_gw || (echo "no network, bye" && exit 1)
– memnoch_proxy
Mar 22 '13 at 13:56
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EC2 instance has no public DNS
...
I had the same problem an solved it. Have a look at the step-by-step instructions:
Go to console.aws.amazon.com
Go To Services -> VPC
Open Your VPCs
select your VPC connected to your EC2 and
select Actions => Edit DNS Hostnames
---> Change DNS hostnames: to YES
Hope this h...
How to grep and replace
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Why do I get "sed: RE error: illegal byte sequence". And yes, I added the -i "" for OS X. It works otherwise.
– taco
Jun 16 '16 at 19:51
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Reading a resource file from within jar
...n a jar (a zip file) like it was a plain old File.
This is explained well by the answers to:
How do I read a resource file from a Java jar file?
Java Jar file: use resource errors: URI is not hierarchical
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How can you strip non-ASCII characters from a string? (in C#)
... new DecoderExceptionFallback()
),
Encoding.UTF8.GetBytes(inputString)
)
);
It may look cumbersome, but it should be intuitive. It uses the .NET ASCII encoding to convert a string. UTF8 is used during the conversion because it can represent any of the original characters...
How do I determine file encoding in OS X?
..."com.apple.TextEncoding"). It's quite likely that the attributes indicated by that @ include the file encoding attribute. You can use the command xattr -p com.apple.TextEncoding <filename> to look at the encoding attribute if it exists.
– bames53
Jan 15 '...
Java String to SHA1
...n)
Thanks to @Jon Onstott for this suggestion.
Old Answer
Convert your Byte Array to Hex String. Real's How To tells you how.
return byteArrayToHexString(md.digest(convertme))
and (copied from Real's How To)
public static String byteArrayToHexString(byte[] b) {
String result = "";
for (i...
One line if-condition-assignment
...t code later.
Also, as a side note, num1 = 20 if someBoolValue is valid Ruby code, because Ruby works a bit differently.
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SSH to Vagrant box in Windows?
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You must patch some Vagrant code by modifying only one file, ssh.rb.
All the info is here: https://gist.github.com/2843680
vagrant ssh will now work also in Windows, just like in Linux.
EDIT: In newer Versions this became unnecessary. You still have to ...
Find the version of an installed npm package
...obally installed packages.
You can find the version of a specific package by passing its name as an argument. For example, npm list grunt will result in:
projectName@projectVersion /path/to/project/folder
└── grunt@0.4.1
Alternatively, you can just run npm list without passing a package na...