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String isNullOrEmpty in Java? [duplicate]
...d java libraries (including apache/google/...), a static isNullOrEmpty() method for Strings ?
10 Answers
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How to create a self-signed certificate with OpenSSL
...se it will prompt you for "at least a 4 character" password.
The days parameter (365) you can replace with any number to affect the expiration date. It will then prompt you for things like "Country Name", but you can just hit Enter and accept the defaults.
Add -subj '/CN=localhost' to suppress que...
How to add a string to a string[] array? There's no .Add function
I'd like to convert the FI.Name to a string and then add it to my array. How can I do this?
13 Answers
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How to clear all the jobs from Sidekiq?
...kiq for background tasks in Rails application. Now the numbers of jobs becomes more, so I want to clear all the jobs. I tried the following command in console
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How to create a bash script to check the SSH connection?
... $a
22/tcp open ssh
$ echo $b
(empty string)
But you'll have to grep the message (nmap does not use the return-value to show if a port was filtered, closed or open).
EDIT2:
If you're interested in the actual state of the ssh-port, you can substitute grep open with egrep 'open|closed|filtered':
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How to create Drawable from resource
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Your Activity should have the method getResources. Do:
Drawable myIcon = getResources().getDrawable( R.drawable.icon );
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Convert a CERT/PEM certificate to a PFX certificate
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How can i achieve the same thing programmatically in C#?
– pankajt
Sep 24 '09 at 6:21
2
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Color text in terminal applications in UNIX [duplicate]
I started to write a terminal text editor, something like the first text editors for UNIX, such as vi. My only goal is to have a good time, but I want to be able to show text in color, so I can have syntax highlighting for editing source code.
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Changing column names of a data frame
I have a data frame called "newprice" (see below) and I want to change the column names in my program in R.
16 Answers
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How do I check if I'm running on Windows in Python? [duplicate]
...ine. I notice in another thread here on stackoverflow it returns 'Vista' sometimes.
5 Answers
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