how to handle error in bash scripting in unix

Posted on 2002-06-25
Last Modified: 2012-06-27

How do i handle an error if for example, i cannot connect to database in bash scripting in unix.

pls help!
Question by:megabyte78
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 51

Accepted Solution

ahoffmann earned 50 total points
ID: 7109904
if [ $? != 0 ]; then
  echo error occured

Author Comment

ID: 7109935
just to confirm, can i do something like this?

if [ sqlplus -s /nolog != 0]; then
   echo error occured
LVL 38

Expert Comment

ID: 7109962
what ahoffmann mean is:

sqlplus -s /nolog
if [ $? -ne 0 ] ; then
  echo error occured
# $? is the return value of your last command

you can do something like the following:

if sqlplus -s /nolog ; then
   echo "ok !"
   echo "error occured"


Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

A metadevice consists of one or more devices (slices). It can be expanded by adding slices. Then, it can be grown to fill a larger space while the file system is in use. However, not all UNIX file systems (UFS) can be expanded this way. The conca…
This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question