Top 10 Programming Fonts

This is the list of Top 10 Fonts for Programming:

1. INCONSOLATA (free) it is similar to TheSansMono. Author Raph Levin
2. CONSOLAS (comercial) from Microsoft
3. DEJA VU SANS MONO (download) Deja Vu font family
4. DROID SANS MONO (download) the best for Android
5. PROGGY (download)
6. MONOFUR (download) I think this is not the best choice as for me
7. PROFRONT (download) it is too small
8. MONACO is the default monospace font on the Mac
9. ANDALE MONO
10. COURIER all systems ship with a version of Courier

Some of my colleagues argued for other fonts e.g.:
* UBUNTU MONO (download)
* VERDANA all systems ship with a version of Verdana (for sure in Mac)

For more details and examples refer to this post "Top 10 Programming fonts":

http://hivelogic.com/articles/top-10-programming-fonts/

How to copy whole directory with SCP

If you want to copy whole directory with scp command just add -r flag like this:
scp -r source-directory-path destination-directory-path

How to get files to your local Mac Desktop from remote server

In order to get files to your local Mac Desktop from remote server do this:


1. Make sure your VPN is working;
2. Use this command in Terminal:
scp root@ip-addres:/root/dir1/dir2/t0backend/dist/mw.rpm \~/Desktop/Icinga_rpms/

If you want to send some files from your local Mac Desktop to some OS (e.g. Linux) on DevVM do this:

1. Make sure your VM is running;

2. Use this command in Terminal:

scp ~/Desktop/Icinga_rpms/mw.rpm \devvm@192.168.188.130:~/Desktop

What is Symbolic link and Hard Link and how to create it on Mac

Symbolic link is the one file on your file system (FS) that holds in itself only one string that is the link to the specific file/directory/archive/etc in your FS.

Hard link is also some file that holds link on some file, but it should be one file on the same partition (and only a file, not a directory or anything else).

In order to create the Symbolic link go to the Terminal and use this command:
ln -s source_file file_name

Notice that file_name will be created even if source_file is not exist yet.

You can check this topic in wikipedia: 

RUS http://ru.wikipedia.org/wiki/Символьная_ссылка.

ENG http://en.wikipedia.org/wiki/Symbolic_link

How to figure out in Terminal the process on a specific port

In order to figure out the current process on a specific port use this command (for example ports 8888 and 9997):


lsof -w -n -i tcp:8888
kill -9 enter here the PID


lsof -w -n -i tcp:9997
kill -9 enter here the PID

How to set MAKE command on Mac

Actually, the MAKE command should be already installed on your Mac if you have Xcode installed. But in my case MAKE have been disappeared after update from Snow Leopard to Lion OSX. By some reason PATH to MAKE was changed. So what you need to do in this case in order to make MAKE available - fix PATH e.g:

Apples-MacBook-Pro:t0-mvn apple$ make
-bash: make: command not found
Apples-MacBook-Pro:t0-mvn apple$ ls /Developer/
.DS_Store                    Documentation/               Icon^M                       SDKs/
About Xcode and iOS SDK.pdf  Examples/                    Library/                     Tools/
About Xcode.pdf              Extras/                      Makefiles/                   usr/
Applications/                Headers/                     Platforms/                   
Apples-MacBook-Pro:t0-mvn apple$ ls /Developer/usr/
X11/          etc/          lib/          llvm-gcc-4.2/ sbin/         
bin/          include/      libexec/      local/        share/        
Apples-MacBook-Pro:t0-mvn apple$ ls /Developer/usr/bin/
Display all 173 possibilities? (y or n)
Apples-MacBook-Pro:t0-mvn apple$ ls /Developer/usr/bin/ma
make            malloc_history  mapc            
Apples-MacBook-Pro:t0-mvn apple$ ls /Developer/usr/bin/make 
/Developer/usr/bin/make
Apples-MacBook-Pro:t0-mvn apple$  /Developer/usr/bin/make 
make: *** No targets specified and no makefile found.  Stop.
Apples-MacBook-Pro:t0-mvn apple$ export PATH=$PATH:/Developer/usr/bin/
Apples-MacBook-Pro:t0-mvn apple$ make
make: *** No targets specified and no makefile found.  Stop.


Then you probably will want to change your PATH variable in your profile configuration. Do this:


$ vi ~/.profile


////
export PATH=/opt/subversion/bin:$PATH:/Developer/usr/bin

Where profile located on your Mac OSX

If you want to view/edit profile settings on your Mac try do this:
Open Terminal and execute this command:
vi ~/.profile

How to execute ifconfig

Try this:

/sbin/ifconfig

What the difference in cunstruct String instance with and without new keyword

There are two different approach of how to create a new String instance. The first one uses keyword new, the second one without new.

For example:

String a = "Iron Man";

String b = new String("Andre");

There is a slight difference between these two approaches, and it is related to String pool memory. In the example above the first variable "a" will be created in string pool memory, and second "b" will be created in "non-pool" memory. Read more about this in linked post below:

Inheriting Java: Chapter 32: The String Class

About memory leak with substring() in class String

I've found a good post about memory leak that may happen during use of method substring() in class String.