CODEWITHSUNDEEP
bashshellerror-handling
Kvass
Kvass

Reputation: 8424

Triggering a function when error occurs in bash script

How can I trigger a function when a command in bash returns an exit code of 1? I know set -e at the top will just make my code terminate, but I want to call this function first. If the code runs ok I want it to exit normally without the function being called. I don't want to do a $? check after every line. I'm sure there's an easy way to do this but I'm new to bash scripting so I don't know it offhand.

Upvotes: 6

Views: 287

Answers (1)

chepner
chepner

Reputation: 530833

Set a trap on the ERR pseudosignal:

set -e
error_handler () {
    # do stuff here
}

trap error_handler ERR

Upvotes: 4

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