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01-09-2008
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How to get exit code in a pipe-lined command?
I have a question about how to get the exit code of the first command when it appears in a pipe-lined command.
For example, I have the following script: grep abc dddd | tee -a log if [[ $? -ne 0 ]] then echo "ERROR!" fi In the above script, [[ $? -ne 0 ]] is supposed to test the exit code of "grep abc dddd". But since it is in a pipe line, the $? actually stores the exit code of "tee -a log". So, [[ $? -ne 0 ]] is always false. How to address this problem? Thanks. |
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