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Convert pem key to ssh-rsa format
...y.pub -i
will read the public key in openssl format from pub1key.pub and output it in OpenSSH format.
Note: In some cases you will need to specify the input format:
ssh-keygen -f pub1key.pub -i -mPKCS8
From the ssh-keygen docs (From man ssh-keygen):
-m key_format Specify a key format for t...
Difference between null and empty (“”) Java String
... tried invoking, say:
b.length()
If the difference you are wondering about is == versus equals, it's this:
== compares references, like if I went
String a = new String("");
String b = new String("");
System.out.println(a==b);
That would output false because I allocated two different objects...
How to parse freeform street/postal address out of text, and into components
... learned a lot in the process.
First, we need to understand a few things about addresses.
Addresses are not regular
This means that regular expressions are out. I've seen it all, from simple regular expressions that match addresses in a very specific format, to this:
/\s+(\d{2,5}\s+)(?![a|p]m\b)(([...
How do I get the result of a command in a variable in windows?
...
If you have to capture all the command output you can use a batch like this:
@ECHO OFF
IF NOT "%1"=="" GOTO ADDV
SET VAR=
FOR /F %%I IN ('DIR *.TXT /B /O:D') DO CALL %0 %%I
SET VAR
GOTO END
:ADDV
SET VAR=%VAR%!%1
:END
All output lines are stored in VAR separa...
Java: Difference between PrintStream and PrintWriter
...
This might sound flippant, but PrintStream prints to an OutputStream, and PrintWriter prints to a Writer. Ok, I doubt I'll get any points for stating the obvious. But there's more.
So, what is the difference between an OutputStream and a Writer?
Both are streams, with the primary...
What is the C# equivalent of NaN or IsNumeric?
... myNum = 0;
String testVar = "Not A Number";
if (Double.TryParse(testVar, out myNum)) {
// it is a number
} else {
// it is not a number
}
Incidentally, all of the standard data types, with the glaring exception of GUIDs, support TryParse.
update
secretwep brought up that the value "2345," w...
Viewing unpushed Git commits
...een pushed to the remote repository? Occasionally, git status will print out that my branch is X commits ahead of origin/master , but not always.
...
Stack Memory vs Heap Memory [duplicate]
...k is a limited resource, and shouldn't be used for anything large. Running out of stack memory is called a Stack buffer overflow. It's a serious thing to encounter, but you really shouldn't come across one unless you have a crazy recursive function or something similar.
Heap memory is much as rskar...
How to find out what group a given user has?
In Unix/Linux, how do you find out what group a given user is in via command line?
5 Answers
...
Continuous Integration for Ruby on Rails? [closed]
...
After a near-death experience that left the still-linked-to website with outdated information and downed the demo site, this project has a spark of life again. But the documentation hasn't moved on, and lots and lots of the steps in the tutorial are just plain broken; I had to change references to...