Shell Programming and Scripting

Hi Guys,

I have a script for which the stdout and stderr should be redirected to a log file, they should not be printed on the screen. Could you please let me know the procedure to redirect the output of the script to a log file. Thanks in advance.

--- Aditya

Code:

 
> logfile.txt 2>&1

Thanks.....
Do i need to add this at the end of the input ??
What is the 2>&1 ??

For exa ;
2 --> stderr
1--> stdoutput

we both of them forward to logfile.txt

Code:

/usr/local/bin/yourscript.sh > logfile.txt 2>&1

first stderror to yourlogfile and then stderror forward to stdout..so stderror and stdout forward to logfile.txt ..

Thank you so much....

---------- Post updated at 04:38 PM ---------- Previous update was at 03:00 PM ----------

What if input has changing parameters everytime (inputs parameters to script changes everytime), then how can we redirect output to log file ?? Do we have to specify everytime to redirect the output ??
Ex : ./sample.sh 23 > logfile.txt 2>&1 (1st time)
./sample.sh 46 > logfile.txt 2>&1 (2nd time)
In this case, do we need to specify this everytime we execute this script or can we fix it once & for all ??

Then try this

Code:

./sample.sh 23 &> logfile.txt