Shulou(Shulou.com)06/02 Report--

Here is a resin startup script in which you can learn a lot about bash shell

#! / bin/sh / / bash shell script

#

# Linux startup script for Resin / / # comments

# chkconfig: 345 85 15

# description: Resin is a Java Web server.

# processname: wrapper.pl

#

# To install, configure this file as needed and copy init.resin

# to / etc/rc.d/init.d as resin. Then use "# / sbin/chkconfig resin reset"

#

JAVA_HOME=/usr/local/java/jdk / / = sign assignment

RESIN_HOME=/usr/local/resin

Export JAVA_HOME RESIN_HOME / / export defines global variables

JAVA=$JAVA_HOME/bin/java / / $represents a variable

#

# If you want to start the entire Resin process as a different user

# set this to the user name. If you need to bind to a protected port

# e.g. Port 80, you can't use USER, but will need to use bin/resin.

#

USER=

#

# Set to the server id to start

#

# SERVER= "- server app-a"

#

ARGS= "- resin-home $RESIN_HOME $SERVER"

If test-r / lib/lsb/init-functions; then / / judgment statement test-r / lib/lsb/init-functions condition file exists and can be read

. / lib/lsb/init-functions / /. Representative source is the same as source / lib/lsb/init-functions

Else / / if the above conditions are not met

Log_daemon_msg () {/ / function

If [- z "$1"]; then / /-z "$1" variable $1 length is 0 / / $1 the first parameter passed when the script is executed

Return 1 / / return

Fi

If [- z "$2"]; then

Echo-n "$1:" / /-n parameter output does not wrap

Return

Fi

Echo-n "$1: $2"

}

Log_end_msg () {

Execute return 1 if [- z "$1"] & & return 1 / / [- z "$1"] is true

If [$1-eq 0]; then / / compare,-eq equals

Echo "."

Else

Echo "failed!"

Fi

Return $1

}

Fi

Case "$1" in / / case Select statement

Start) / / the first parameter of the script is start

Log_daemon_msg "Starting resin" / / calls the function, passing parameters

If test-n "$USER"; then / / condition: variable USER length is not 0

Su $USER-c "$JAVA-jar $RESIN_HOME/lib/resin.jar $ARGS start" 1 > / dev/null 2 > / dev/null / / su restores identity after another user executes the command-c

Else

$JAVA-jar $RESIN_HOME/lib/resin.jar $ARGS start 1 > / dev/null 2 > / dev/null / / 1 > dev/null execution normal information output to empty file 2 > error message

Fi

Log_end_msg $? / $? The result of the last command execution 0 indicates success. For more information, please see other articles.

Stop)

Log_daemon_msg "Stopping resin"

If test-n "$USER"; then

Su $USER-c "$JAVA-jar $RESIN_HOME/lib/resin.jar $ARGS stop" 1 > / dev/null 2 > / dev/null

Else

$JAVA-jar $RESIN_HOME/lib/resin.jar $ARGS stop 1 > / dev/null 2 > / dev/null

Fi

Log_end_msg $?

Restart)

$0 stop / / $0 script name

$0 start

*) / / except for start stop restart

Echo "Usage: $0 {start | stop | restart}"

Exit 1 / / 1 indicates an error

Esac

Exit 0 / / 0 indicates no error

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