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How do I clear/delete the current line in terminal?
If I'm using terminal and typing in a line of text for a command, is there a hotkey or any way to clear/delete that line?
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How can I configure my makefile for debug and release builds?
I have the following makefile for my project, and I'd like to configure it for release and debug builds. In my code, I have lots of #ifdef DEBUG macros in place, so it's simply a matter of setting this macro and adding the -g3 -gdwarf2 flags to the compilers. How can I do this?
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SQL Client for Mac OS X that works with MS SQL Server [closed]
...don't really need a GUI, but it would be nice to have for the color coding and resultset grid. I'd rather not have to use a VM.
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No Exception while type casting with a null in java
...ally print methods call String.valueOf(object) method on the input object. And in valueOf method, this check helps to avoid null pointer exception:
return (obj == null) ? "null" : obj.toString();
For rest of your confusion, calling any method on a null object should throw a null pointer exception...
Git ignore file for Xcode projects
...iles, potentially corrupting our live projects. This IMHO is unacceptable, and I've now started logging bugs against it each time they do so. I know they don't care, but maybe it'll shame one of them into treating developers more fairly.
If you need to customize, here's a gist you can fork: https...
kill -3 to get java thread dump
I am using kill -3 command to see the JVM's thread dump in unix. But where can I find the output of this kill command? I am lost!!
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Is there a way to follow redirects with command line cURL?
...f the commenters.
For me, the obstacle was that the page required a login and then gave me a new URL through javascript. Here is what I had to do:
curl -c cookiejar -g -O -J -L -F "j_username=yourusename" -F "j_password=yourpassword" <URL>
Note that j_username and j_password is the name of...
Should operator
...tly defining the bool relationship operators.
The operator:
Equality == and !=
Relationship < > <= >=
These operators should return a bool as they are comparing two objects of the same type. It is usually easiest to define these operators as part of the class. This is because a clas...
Who is listening on a given TCP port on Mac OS X?
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On macOS High Sierra and later, use this command:
lsof -nP -iTCP:$PORT | grep LISTEN
or to just see just IPv4:
lsof -nP -i4TCP:$PORT | grep LISTEN
On older versions, use one of the following forms:
lsof -nP -iTCP:$PORT | grep LISTEN
lsof -...
How to resolve symbolic links in a shell script
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According to the standards, pwd -P should return the path with symlinks resolved.
C function char *getcwd(char *buf, size_t size) from unistd.h should have the same behaviour.
getcwd
pwd
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