Writing to standard error

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Writing to standard error
# 1  
Old 07-23-2009
Writing to standard error


I want to redirect the standard output to standard error whenever an error occurs for ex
if [ a -eq 0 ]
echo right
echo wrong

I want to redirect the wrong to stderror .Adding a line 1>&2 will do that or is additional code to be added.How can i verify whether the output is written to standard error?Help me.

# 2  
Old 07-23-2009
jb>cat s3
echo right
echo wrong >&2

jb>sh s3

jb>sh s3 1>log.txt 2>elog.txt

jb>cat log.txt
jb>cat elog.txt

# 3  
Old 07-23-2009
Thanks for the reply
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Handling standard error in condition

Testing this with KSH on RHEL The bellow code works but i can't seem to handle the exit status of the unix command when it fails... i wanted to put something like >/dev/null 2>&1 to manage standard output and standard error but it changes my logic and the code doesn't work cause it doesn't... (11 Replies)
Discussion started by: maverick72
11 Replies

2. Shell Programming and Scripting

Standard out and standard error

I need to run a cronjob and in the cronjob I execute a script that if there is an error produces standard error so I do /RUNMYSCRIPT 2> mylogfile.log However, if it runs correctly, I don't get a standard error output, I get a standard out output. How do I redirect both standard error and... (2 Replies)
Discussion started by: guessingo
2 Replies

3. Shell Programming and Scripting

Redirecting standard error issues.

Hello Friends, Good Day. I am trying to redirect a standard error to the bit bucket(/dev/null) but it is not working. Though, it is working fine in redirecting the standard output. Below is the output of my script without any redirection: $ ./CheckVSSLocks.sh... (16 Replies)
Discussion started by: singh.chandan18
16 Replies

4. UNIX for Dummies Questions & Answers

Redirect Standard output and standard error into spreadsheet

Hey, I'm completely new at this and I was wondering if there is a way that I would be able to redirect the log files in a directories standard output and standard error into and excel spreadsheet in anyway? Please remember don't use too advanced of terminology as I just started using shell... (6 Replies)
Discussion started by: killaram
6 Replies

5. Shell Programming and Scripting

Redirect standard error to input of other process, 2| ?

Hello, I would like to know if there is a shell in which operations such as 2| (redirect standard error of one process to the standard input of another one) exist? I know it is possible to do it in bash with things like: (process 2>&1) | other_process but I find it a bit intricate when... (3 Replies)
Discussion started by: chlorine
3 Replies

6. Shell Programming and Scripting

standard error to standard out question

Hi there how can i get the result of a command to not give me its error. For example, on certain systems the 'zfs' command below is not available, but this is fine becaues I am testing against $? so i dont want to see the message " command not found" Ive tried outputting to /dev/null 2>&1 to no... (5 Replies)
Discussion started by: hcclnoodles
5 Replies

7. Shell Programming and Scripting

redirect only the standard error output to mail

I'm writing a script using file descriptor 2 (std error) to send an email only if the command fails or errors out but the script always emails me irrepective of whether it fails or not. It will not email the /tmp/check.error file output if doesn't error out just the mail with the subject "Cannot... (3 Replies)
Discussion started by: barkath
3 Replies

8. UNIX for Dummies Questions & Answers

Writing to Standard Error

Hi. I'm working on a project for a class, and there's one part of the project that is confusing me. It's a compression and decompression project, and after we write our code for compression, we need to write to standard error. (1) Size of original file (number of characters read... (1 Reply)
Discussion started by: sjung10
1 Replies

9. UNIX for Dummies Questions & Answers

redirect standard error into log file

Hi, I am new in shell scripting. Can anyone point out what wrong of below script. If I want the error output to "sqlerror.log" and database pool data output to "bulk_main.dat". Right now, the below script, if successful execute, the data will output to bulk_main.dat && sqlerror.log both... (7 Replies)
Discussion started by: epall
7 Replies

10. UNIX for Dummies Questions & Answers

Error: Internal system error: Unable to initialize standard output file

Hey guys, need some help. Running AIX Version 5.2 and one of our cron jobs is writing errors to a log file. Any ideas on the following error message. Error: Internal system error: Unable to initialize standard output file I'm guessing more info might be needed, so let me know. Thanks (2 Replies)
Discussion started by: firkus
2 Replies
Login or Register to Ask a Question