curl error trapping in ksh


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# 1  
curl error trapping in ksh

I hope that I can trap curl errors, and have my shell script error out and quit if curl has any sort of problem.

For example, I have the following command in my shell script:

Code:
 curl --trace -n -v --ftp-ssl ftp://xxx.xxx.xxx.xxx:2122 --user user:password -o /tmp/file.txt

Works great, except for sometimes when we have a network problem or something, and I get:

curl: (56) FTP response reading failed

So I get a good error message, but I want my whole script to send an error signal if this occurs.

In other words, I'd like the script to send a signal similar to what would occur with an 'exit 1' to the OS. I can do this with an error trapping function, but does curl have a flag or something for signaling so I don't have to write a function?

OR perhaps am I not understanding what I need to detect an error and signal?

Thank you for your time and understanding.

Last edited by prestonatwork; 12-03-2010 at 03:29 PM.. Reason: Edit: Added code tags for readability
# 2  
Neither curl nor your script is "sending" any "signals" for this. The program tells the script whether it succeeds or fails, you just have to check for it. A simple if-statement will tell if curl succeeded or not:
Code:
if ! curl --trace -n -v --ftp-ssl ftp://xxx.xxx.xxx.xxx:2122 --user user:password -o /tmp/file.txt
then
        echo error
        exit 1
fi

or even a simple

Code:
curl --trace -n -v --ftp-ssl ftp://xxx.xxx.xxx.xxx:2122 --user user:password -o /tmp/file.txt || exit 1

This User Gave Thanks to Corona688 For This Post:
# 3  
Thank you! Looks like the second code line example is along the lines of what I am looking for.
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