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Setting up the Development Environment for Spring Web Projects

The Required Programs For Java Development Environment


JDK1.8.0_212
ref link:
or
sudo vi ~/.profile
Add following lines in end
export JAVA_HOME=/usr/bin/java
export PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
log out and login so that the PATH is set .
to check the path you have set .. check the JAVA_HOME variable
Always 
source ~/.profile
source ~/.bashrc  
echo $JAVA_HOME
which java
java -version
So that the pc knows any changes have occurred in the respective files.
which java command to find the location of the java  

mongoDB

curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.2.22.tgz
tar -zxvf mongodb-linux-x86_64-3.2.22.tgz
mkdir -p mongodb cp -R -n mongodb-linux-x86_64-3.2.22/ mongodb
export PATH=(mongodb_install_directory)/bin:$PATH
replace the path with the install directory.

mySQL

sudo su   (login to root)
mysql -u root -p  
give password

postgreSQL

/configure
make
su
make install
root# mkdir /usr/local/pgsql/data


gedit ~/bashrc
exprot LD_LIBRARY_PATH=/usr/local/pgsql/lib
export LD_LIBRARY_PATH

MANPATH=/usr/local/pgsql/share/man:$MANPATH
export MANPATH

sudo vim ~/.profile

export PATH=/usr/local/pgsql/bin:$PATHroot# chown postgres /usr/local/pgsql/data

(The chown command is used to change the owner and group of files, directories and links. By default, the owner of a filesystem object is the user that created it. The group is a set of users that share the same access permissions)
  1. root# su - postgres   (in the root@adrian type in the following)
  2. postgres@adrian-pc:~$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
  3. sudo su - postgres  (optional.no need of when logged on as the root)
  4. postgres -D /usr/local/pgsql/data >logfile 2>&1 &
  5. psql -h /var/run/postgresql



Differences between .bashrc and .profile

  • bashrc will be executed after the system boot up and is for non-login shell. It is specific to bash
  • profile will be executed after the user login. It's for login shell and can be read by different shells
  • source bashrc can be used to update bashrc and bash profile can be used to update profile
  • profile has the stuff not specifically related to bash, such as environment variables (PATH etc)
  • bashrc has anything you'd want at an interactive command line. Command prompt, EDITOR variable, bash aliases etc
  • bashrc must not output anything
  • Anything that should be available only to login shells should go in profile
  • Anything that should be available to graphical applications must be in profile check the sequence of the 3 files hierachy

bash is like the windows batch file equivalent




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