Ubuntulinux basic operation learning

1. configure the root password and allow the root user to log on to the graphic interface. Press "ESC" to bring up the Operating System menu and select the second item "Recovermode" to go to the command line interface; run the "passwd" command to set and confirm the password. Open "etc/MCM 1. in the conf file, find the "AllowRoot = FALSE" field and change it to "AllowRoot = TRUE ". 2. configure the javasdk environment variable to open the "etc/profile" file and enter the following content: JAVA 1. configure the root password and allow the root user to log on to the graphic interface

Press "ESC" to bring up the Operating System menu at startup, and select the second item "Recover mode" to go to the command line interface;

Use the "passwd" command to set and confirm the password;

Open the "etc/TPD. conf" file, find the "AllowRoot = FALSE" field, and change it to "AllowRoot = TRUE ".

2. Configure java sdk Environment Variables

Open the "etc/profile" file and enter the following content:

JAVA_HOME =/usr/jdk1.6.0

PATH = $ JAVE_HOME/bin: $ PATH

CLASSPATH =.: $ JAVA_HOME/lib/tools. jar: $ JAVA_HOME/lib/dt. jar

Export JAVA_HOME PATH CLASSPATH

3. Modify the update rate

Open the "etc/X11/xorg. conf" file;

Find the "Section Monitor" option and modify "VertRefresh 60-101 ".

4. The program is automatically started upon startup.

Open the "etc/rc. local" file and add the program path and running command to it.

Special case: the following command is required for tomcat self-startup (meaning to specify a user to run tomcat)

Su-usr-c tomcat path

5. Chinese Input Method

Installation: scim-pinyin and im-switch

Create a "75 Input" file in the "etc/X11/XSession. d/" directory and enter the following content:

XMODIFIERS = @ im = SCIM

GTK_IM_MODULE = scim

Scim-d