Capturing db2 command's return code in shell script

Question

x=`su - db2inst1 -c "db2 get dbm cfg" |grep KEYSTORE_LOCATION | awk '{print $5}'`
rc="$?"
echo "${rc}"

this echos a 0.

If I forcefully execute a wrong command

x=`su - db2inst1 -c "db get dbm cfg" |grep KEYSTORE_LOCATION | awk '{print $5}'`
rc="$?"
echo "${rc}"

this gives me an error:

-bash: db: command not found

but still gives a 0 return code. I think its for the assignment. But how do I evaluate for the command.

John Kugelman · Accepted Answer · 2018-09-12 13:06:49Z

2

set -o pipefail

By default the return value of a pipeline is the exit code from the last command—here, awk '{print $5}'. Turn on pipefail to have the pipeline fail if any command fails, not just the last.

answered Sep 12, 2018 at 13:06

John Kugelman

364k70 gold badges555 silver badges600 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

codec Over a year ago

How do we unset this?

John Kugelman Over a year ago

set +o pipefail

Collectives™ on Stack Overflow

Capturing db2 command's return code in shell script

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related