Linux Java Tomcat Path Env Classpath

ubuntu linux tips for java developers one of my good friend fabrice pasquier was helping me a lot while testing and installing jboss in linux ubuntu. ubuntu is one of best breed from linux family, its simple but very powerful. you can install ubuntu as a separate os or as a dual os with windows os.

some useful commands * ls- all :: lists files/folder with access details * chmod a+x :: helps to execute the files with extensions like .sh, .rpm .bin etc., * ./shutdown.sh -s :: helps to shutdown jboss from where its started. * ps - a :: shows a snapshots of current processes * ps -a | grep bash :: shows processes started using bash * ps - a top * ps - a u username * kill -9 :: kill the particular process whose pid can be found using ps -a * env :: shows the environment variables of the system * env | grep path :: shows the path environment variable alone * $path :: shows the path variable * ctrl + z :: pressing this will help you get the command prompt from a running process, just after this type bg and move the process to run in background. * ctrl + atl + backspace key :: restarts the graphical interface of the current user. * sudo mv , move files/folders * less /etc/profile :: similar to more or type command, but this lets you also edit the file upon pressing hot keys * ln -s :: creates a symbolic link of the file. * which :: find and displays the filename location, escp for executable file * find / -name "mozilla" :: find and displays where the file/folder mozilla is located * smbclient and samba server helps for networking with windows drives * webmin and webmin-mysql helps to admin the system via web interface * /etc/init.d/webmin start :: starts/restarts webmin * gedit :: will open simple text editor * gnome-terminal will open command window * sudo xterm passwd :: will open x-terminal window for root user * alien <-rpm file> :: alien -i <-rpm file> :: will helps to unpack and install rpm based files in debian system * rm :: remove file * rmdir :: remove directory * mv :: move file * cp :: copy file * gphoto * df * du -s < file/directory name> will list the file/directory size in kb,mb format * alias * env :: displays the enviroment and syatem variable settings * export $path=$path:... sets paths

* chgrp :: change file/folder group * chusr :: chnage file/folder user * cat /proc/meminfo- to tell what memory used by processes * free- show free memory * watch "ls -al" monitors the current folder * watch "du -s" monitors current folder byte size * scp username@servername :directory location * makes ssl copy rsync synchronize one folder to another across network * tar - tar archive tool * touch - update the file properties with current date and time * mysqldump -u username -p unemed_dbo generates sql scripts, mysql script /home/balaji/somefile.sql to install jre in firefox, try to find the jre plugin file under the jdk/jre folder and make a symbolic to it inside the firefox directory... installing mysql in ubuntu apt-get install mysql-server then execute mysql_install_db export path=$path:/home/muskan/jdk/bin export classpath=$classpath:/home/muskan/jdk/lib/tools.jar;/home/muskan/tomcat/server/lib /servlet-api.jar login root modify .cshrc or .bashrc then give setenv path=${path}:${rootsys}/bin to set environment variable cd tomcat/bin ./startup.sh