Java return a value to Unix variable

[Sam Palanivel]

Hi,

I have java program which does all the processing and I need return value to
Unix variable.

Question: How can I return a value to Unix variable?

Thanks
Sam

 

[Yu SONG]

Hi,

I have java program which does all the processing and I need return value to
Unix variable.

Question: How can I return a value to Unix variable?

Do you want to "set" a variable in Unix or "get" a variable value from Unix?

Have a look at

"EXPORT" unix cmd

&

http://java.sun.com/j2se/1.4.2/docs/api/java/lang/System.html#getProperty(java.lang.String)


HTH


--
Song

/* E-mail.c */
#define User "Yu.Song"
#define Warwick "warwick.ac.uk"
int main() {
printf("Yu Song's E-mail: %s@%s", User, Warwick);
return 0;}

Further Info. : http://www.dcs.warwick.ac.uk/~esubbn/
_______________________________________________________

 

[iksrazal]

Hi,

I have java program which does all the processing and I need return value to
Unix variable.

Question: How can I return a value to Unix variable?

Thanks
Sam

If you start a shell, and set a variable, the variable is only good
for the life of that shell. So with Runtime.exec(), you can execute
any command in the shell, but shell vars die when the command shell
dies /runtime exec finishes. Heres an example for 'whoami' on
solaris. Setting vars are shell specific.

Runtime runtime = Runtime.getRuntime();
Process p = runtime.exec("/usr/ucb/whoami");
BufferedReader out = new BufferedReader(new
InputStreamReader(p.getInputStream()));
String output = "";
while((output = out.readLine()) != null)
{
System.out.println("ID --> " + output);
}

HTH

Outsource to an American programmer living in brazil!
http://www.braziloutsource.com/
iksrazal

 

[Tris Orendorff]

f> Hi,

I have java program which does all the processing and I need return
value to Unix variable.

Question: How can I return a value to Unix variable?

Hi,

Use the ` feature of most shells to run a program and use its standard output as input on a command line:

xxx=`java HelloWorldApp.class`
echo $xxx
Hello, World!

--
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GCS d++ s+:- a+ C+ UL++++ P+ L+ E- W+ N++ o- K++ w+ O+ M !V PS+ PE Y+ PGP t+ !5 X- R- tv--- b++
DI++ D+ G++ e++ h---- r+++ y+++
------END GEEK CODE BLOCK------

 

[mromarkhan]

f> Hi,

Hi,

Use the ` feature of most shells to run a program and use its standard output as input on a command line:

xxx=`java HelloWorldApp.class`
echo $xxx
Hello, World!

Peace.

<output>
$ xxx=`java me`
$ echo $xxx
Peace
$
</output>


Those quotes are backquotes, which are located near the number one
on my keyboard.

You can use this technique with other programs that output their
data to standard out, such as lynx. In addition, the pipe
operator may be used.
<code>
#!/usr/bin/ksh
tableCount=0
trCount=0
endtrCount=0
readData=0
no_reg_string="<td align=\"center\" bgcolor=\"#FFFFFF\" colspan=\"2\"><IMG"
tableElement="<table"
rowElement="<tr"
endrowElement="</tr"
raw_data=`lynx -source -dump http://weatheroffice.ec.gc.ca/forecast/city_e.html?yyz`
echo "content-type: text/html"
echo
tableThere=`echo "$raw_data" | grep "$no_reg_string"`
#<td align="center" bgcolor="#FFFFFF" colspan="2">
#<IMG src="/weathericons/16.gif" border="0"
#width="60" height="51" alt="Light Snow"></td>
#remove everything up to first >
#remove </td>
#surround with base tag
#backslash use to escape &gt;
no_left=${tableThere#*\>}
no_right=${no_left%\</td\>}
echo "<base href=\"http://weatheroffice.ec.gc.ca\">$no_right</base>"

</code>

<output>
content-type: text/html

<base href="http://weatheroffice.ec.gc.ca"><IMG src="/weathericons/31.gif" borde
r="0" width="60" height="51" alt="Mainly Clear"></base>
</output>


Have a good day.