Exit status as zero byte files


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Exit status as zero byte files
# 1  
Old 05-10-2012
Question Exit status as zero byte files

Hi,
In a list of commands executed in a script, how do you make sure that the previous command worked fine?
I have a list of awk commands and I want to make sure that the script aborts if any command leaves a zero byte file.
# 2  
Old 05-10-2012
It really depends on the commands. If they return error codes properly, you can just set -e at the very top of the script, and the script will just quit at the first command that returns anything but success.

If your awk scripts don't return proper error codes, as most probably don't, then you'll have to actually check, after each command.

Code:
[ -z "$FILE" ] || exit 1

 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Want to get the exit status

Hi All, I am trying to create a zip file with all the txt files(these are in large number) in the current directory. I am able to do this operation sucessfully. After this i want to get the status of the tar command executed and do accordingly. When i am trying with the below code, the status... (3 Replies)
Discussion started by: paddu
3 Replies

2. Shell Programming and Scripting

exit status from the script is always 0

Hi , I have a bash script , which does the network configuration. Messages from this script are dumped on console as well as stored in a log file . This script is invoked from a C code using system call . The script returns different exit code , to indicate different error cases. The... (1 Reply)
Discussion started by: abhirai
1 Replies

3. Shell Programming and Scripting

Exit Status

I have a shell script (#!/bin/sh) that interacts with Appworx and Banner Admin. In my script I want to check the exit status of awrun before continuing. awrun can run for 10 seconds or it can run for over a minute. So my question is, will it go through my if statement before awrun may even be... (2 Replies)
Discussion started by: smkremer
2 Replies

4. Shell Programming and Scripting

Check for exit status

Hi I have following code I want If whole code executes successfully then return true If found any error then print the error I tried if ; then But this checks only for the just upper line execution #!/bin/bash PATH1=/var/log/mysql PATH2=/home/ankur/log FILE1=mysql-bin.index... (4 Replies)
Discussion started by: kaushik02018
4 Replies

5. Shell Programming and Scripting

Exit status

I'm preparing for exam and one of exams is to write own test command... I wonder if in unix is a command which just returns exit code you specify.. I know I can easily write a function like this: exStatus() { return $1 } -> my question is rather theoretical thank you! (9 Replies)
Discussion started by: MartyIX
9 Replies

6. Shell Programming and Scripting

Check if 2 files are identical byte-to-byte?

In my server migration requirement, I need to compare if one file on old server is exactly the same as the corresponding file on the new server. For diff and comm, the inputs need to be sorted. But I do not want to disturb the content of the file and need to find byte-to-byte match. Please... (4 Replies)
Discussion started by: krishmaths
4 Replies

7. Shell Programming and Scripting

How to get the exit status

Hi all, I'm running a program which return 1 upon success. But when encounters problem shell return 's '1' . How to differentiate between them the shell return value and script return value. Ex. function fn return '1' if executed successfully and '0' if failed. But when if shell encounters... (1 Reply)
Discussion started by: yhacks
1 Replies

8. Shell Programming and Scripting

Checking Exit Status

I hope one of you smart people out there can help me with what seems like a real simple questing but I can't quite figure out. In a script I am doing a cmp on two files. I am trying to check the exit status with an if statement but can't seem to figure out the syntax. If the exit status is 1 I... (4 Replies)
Discussion started by: PrimeRibAndADew
4 Replies

9. Shell Programming and Scripting

exit status

i downloaded a text file from metalab.unc.edu called sh.txt and in this reference manual it refers to shell scripting exit status .. at the end of one of the examples that author gave an exit status of 127.. to what does a 127 exit status refer too and what is its purpose in the code. moxxx68 (1 Reply)
Discussion started by: moxxx68
1 Replies

10. UNIX for Advanced & Expert Users

ftp exit status.

Does ftp from unix have an exit status. In the sense after ftp is invoked and if the ftp fails during file transfer does it exit out with a status other than 0. What is do right now is invoke ftp and right it to a log and then grep for 'File Transferred Sucessfully'. Is this the only way to do it... (1 Reply)
Discussion started by: oracle8
1 Replies
Login or Register to Ask a Question