Sponsored Content
Top Forums Shell Programming and Scripting return code of a unix command Post 302129969 by jim mcnamara on Thursday 2nd of August 2007 03:34:38 PM
Old 08-02-2007
Note: rm * can be very dangerous, be careful

Code:
<some command>
echo "$?"

will display 0 if "some command" was successful. It will show 1 (or another non-zero number) if the command failed. Usually commands also display error messages when something goes wrong.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Move command return with exit code of 2

I have a script which loads data files into Oracle and then moves each file into a 'processed' directory when each file has finished loading. Last night I found that the script was failing on the mv statement (with a return code 2) and the following message, mv: cannot access... (1 Reply)
Discussion started by: handak9
1 Replies

2. UNIX for Dummies Questions & Answers

to pick up the Return Code ( RC) from the mailx command and return it to SAS uisng 's

Hi All, Can anyone please let me know the syntax / how to pick up the Return Code ( RC) from the mailx command and return it to SAS uisng 'system()' function and '${?}'. I am in a process to send the mail automatically with an attachment to bulk users. I have used 'Mailx' and 'Unencode'... (0 Replies)
Discussion started by: manas6
0 Replies

3. Shell Programming and Scripting

Return code of command assigned to variable

How do I evaluate the result of a command assigned to a variable?? Example: var1=`cmd` rc=$? rc will be the result of the assignment rather than cmd since it executes after. How do I evaluate the result of the command itself? Cheers..:confused: (2 Replies)
Discussion started by: browndr
2 Replies

4. HP-UX

return code from oracle to unix script

Hi I'm writing a shell script that connects to oracle database and fires query to check the availability of data in a table. In case of no data found then what will be the return code and how to handle in that in variable. Kindly provide with an example for better understanding... Thanks... (1 Reply)
Discussion started by: ksailesh
1 Replies

5. Shell Programming and Scripting

How to get the return code of subroutines executed as standalone as command line in Perl ?

How to do I get the return code of a subroutine in a perl module if invoke the subroutine as standalone, I have an module say TestExit.pm and in that i have a subroutine say myTest() which is returns 12, if i were to call the subroutine from command line like CASE:1 ( Without an explict... (2 Replies)
Discussion started by: ennstate
2 Replies

6. Shell Programming and Scripting

Writing a UNIX script from LOG to provide return code.

Folks - Firstly, I do apologize that my first post here is a question. I am quite familiar with UNIX since our application is running on it. We are trying to automate a few things on our end and I am challenged with a task in hand that requires UNIX scripting. I am totally a newbie in UNIX... (4 Replies)
Discussion started by: sk72
4 Replies

7. Shell Programming and Scripting

Managing awk return code over SSH command

Hello all, This bellow code works. I'm just trying to find a simplified way to achieve this. I'm sure there is an easier way and it must be to simple for me to find. Verify that the OS version is 6.1. If not exit the script. Of course if i just put a && exit 1 at the end of the ssh... (11 Replies)
Discussion started by: maverick72
11 Replies

8. Shell Programming and Scripting

Unix return code example

Hi, Does anyone here can guide me to understand how is return code works in a parent-child relation with a simple example? I have a request to build the script with return code in a child script, but i want to understand how does child script can return a code to the parent, stated if its... (4 Replies)
Discussion started by: khchong
4 Replies

9. Shell Programming and Scripting

save the return value of a unix command

Hi all, I am new in linux script, and I have the code below #!/bin/bash CMD="shuf -i 1-5 -n 1" $CMD echo $CMD exit 0 if I run the $CMD, it will return me a shuffle value. However, I need to save the return value of the shuffle, and use it later on. I tried for example print the... (3 Replies)
Discussion started by: peuceul
3 Replies

10. Shell Programming and Scripting

How to exit a shell script if a unix command does not return any value for 10 seconds?

Hi, Can anyone help me how to exit a shell script if a unix command inside does not return any value for 10 seconds? The scenarios is like this. I want to login to a application using shell script where the connection string is mentioned.but suppose this connection string is not... (10 Replies)
Discussion started by: arijitsaha
10 Replies
exit(1) 							   User Commands							   exit(1)

NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps SYNOPSIS
sh exit [n] return [n] csh exit [ ( expr )] goto label ksh *exit [n] *return [n] DESCRIPTION
sh exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF will also cause the shell to exit.) return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe- cuted. csh exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr. The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end. ksh exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit except for a shell which has the ignoreeof option (See set below) turned on. return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5) SunOS 5.10 15 Apr 1994 exit(1)
All times are GMT -4. The time now is 05:53 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy