[SOLVED] cannot redirect output to file please help

figure20012 · 07-21-2012, 08:07 AM

I cannot redirect output to a file.It appears on the bash output
my command is
/usr/java/j2sdk1.4.2_03/bin/java -version > output.txt
the output is display on the bash shell
i want it to be redirected to the file
please help

pixellany · 07-21-2012, 08:32 AM

Try this:
exec 2 > filename
<command>

figure20012 · 07-21-2012, 08:42 AM

thanks a lot pixellany
it worked..

silendo · 07-21-2012, 08:42 AM

you must use this command:

Code:

/usr/java/j2sdk1.4.2_03/bin/java -version 2> output.txt

figure20012 · 07-21-2012, 08:43 AM

thnx silendo

figure20012 · 07-21-2012, 09:12 AM

i have another problem now
i need to ssh on a remote machine to run the command
result=`ssh "10.0.2.15" /usr/java/j2sdk1.4.2_03/bin/java -version`
$result 2>> result.txt

the result is not copied to the result.txt
Can anyone please help me

pixellany · 07-21-2012, 02:36 PM

redirection only works when some output is being generated. "$result" does not generate any output.

Try using

Code:

echo $result >> result.txt

figure20012 · 07-22-2012, 12:07 AM

result=`ssh "10.0.2.15" /usr/java/j2sdk1.4.2_03/bin/java -version`
echo $result 2>> result.txt does not work
the result from /usr/java/j2sdk1.4.2_03/bin/java -version is not copied to $result
the echo $result >> result.txt copied null to result.txt
how can i do that Sir?

pixellany · 07-22-2012, 05:19 AM

figure*;

You have marked the thread "SOLVED"---this means that most people will not see your new question.

First: What happens if you just do this?:

Code:

ssh "10.0.2.15" /usr/java/j2sdk1.4.2_03/bin/java -version

Side issue:
It seems that "command 2> filename" does not always work. I'm not sure why

chrism01 · 07-22-2012, 08:09 PM

This works for me as a test

Code:

r=$(ssh 127.0.0.1 perl -v)
echo $r  # shows perl version info
echo $r>t.t
cat t.t   # shows perl version info

note that in *nix

0 = stdin
1 = stdout
2 = stderr

HTH