Solved

Store the error output of a command in shell script

Posted on 2013-12-12
4
254 Views
Last Modified: 2013-12-13
I am able to store the output of a command when it completes successfully.
example

#!/bin/sh
createimage=$(aws ec2 create-image --instance-id i-bb68f5df --name ftp.b2b.backup.12-1 --no-reboot --description ftp.b2b.backup.test)
echo "$createimage"

script returns
{
    "ImageId": "ami-f5113e9c"
}

however when the command fails in the script the output is not being stored in the createimage variable.
0
Comment
Question by:MidwestTapes
[X]
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
  • 2
  • 2
4 Comments
 
LVL 29

Accepted Solution

by:
MikeOM_DBA earned 500 total points
ID: 39715398
Try:
createimage=$(aws ec2 create-image --instance-id i-bb68f5df --name ftp.b2b.backup.12-1 --no-reboot --description ftp.b2b.backup.test  2>&1 )

Open in new window

0
 

Author Comment

by:MidwestTapes
ID: 39716840
Yea that did the trick but before I close out I curious as to what the 2>&1 means/did.
0
 
LVL 29

Expert Comment

by:MikeOM_DBA
ID: 39717019
It means: send error messages (2) to regular output  (&1)
0
 

Author Comment

by:MidwestTapes
ID: 39717037
Thank you
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Linux "time" command output redirection 16 217
AD Cleanup by EmployeeID 11 71
AWK: Pythagoras script 6 34
Replacing multiple embedded commas in a CSV file with sed 10 23
Over the years I've spent many an hour playing on hardened, DMZ'd servers, with only a sub-set of the usual GNU toy's to keep me company; frequently I've needed to save and send log or data extracts from these server back to my PC, or to others, and…
How to remove superseded packages in windows w60 or w61 installation media (.wim) or online system to prevent unnecessary space. w60 means Windows Vista or Windows Server 2008. w61 means Windows 7 or Windows Server 2008 R2. There are various …
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…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

735 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