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Java command in rc.local

 
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# 1  
Old 10-31-2011
Java command in rc.local
Hi, I hope this is in the right place.

I am trying to get a java command to execute with nohup in the rc.local file. When I remove the nohup it works fine. I need this to run without puTTy open.

This is the command that works:
Code:
cd /home/powvets/public_html/bin/luceneserver/;/usr/local/jdk1.6.0_26/bin/java -Xrs -jar ktlucene.jar&

this one doesn't:
Code:
nohup cd /home/powvets/public_html/bin/luceneserver/;/usr/local/jdk1.6.0_26/bin/java -Xrs -jar ktlucene.jar&

Says it can't find the file

This one doesn't work either:
Code:
nohup "cd /home/powvets/public_html/bin/luceneserver/;/usr/local/jdk1.6.0_26/bin/java -Xrs -jar ktlucene.jar"&

Same error

Trying to run
Code:
java -Xrs -jar ktlucene.jar&

Also fails as it can't find ktlucene.jar

Any help would be appreciated.

Thanks,
Wayne

Moderator's Comments:
Mod Comment Please use code tags <- click the link!
Last edited by zaxxon; 10-31-2011 at 09:21 AM.. Reason: code tags, see PM
# 2  
Old 10-31-2011
Did you try
Code:
cd /home/powvets/public_html/bin/luceneserver/; nohup /usr/local/jdk1.6.0_26/bin/java -Xrs -jar ktlucene.jar &

?

You could also put your cd and other commands into a script and start just the script with nohup and &.
# 3  
Old 10-31-2011
Hi, thanks for the answer. I couldn't write a script if I had to.

I tried that and I got a command prompt with

Code:
root@palladium [/]# nohup: appending output to "nohup.out"

Does that mean it worked? How do I check to see what is running in nohup.out? The cursor went to a line below the output without a prompt, had to hit enter to get prompt.

Thanks again,

Wayne
# 4  
Old 10-31-2011
Usually if you don't get an error in Unix/Linux it is supposed to have worked. You can test it though with echo $? which shows the return code of the last entered command. Anything else but 0 is usually an error. The Java program itself might write it's own log - no clue.
If this is a continously running process in the background, you should be able to use something like
Code:
ps -ef| grep -i ktlucene

to see it running. No clue if you can test it for output or how to interact in any way with that process.
That it writes this nohup.out is normal.

From the man page:
Quote:
If standard input is a terminal, redirect it from /dev/null. If standard output is a terminal, append output to `nohup.out' if possible,
`$HOME/nohup.out' otherwise. If standard error is a terminal, redirect it to standard output. To save output to FILE, use `nohup COMMAND >
FILE'.

NOTE: your shell may have its own version of nohup, which usually supersedes the version described here. Please refer to your shell's documen-
tation for details about the options it supports.
# 5  
Old 10-31-2011
Hi Zaxxon, that worked, code 0.

Thanks Heaps,
Wayne
 
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