CODEWITHSUNDEEP
linuxbashparentexit
Ulrik
Ulrik

Reputation: 1141

Get exit status of the parent's last command

If I have a bash script that looks like this:

some_command
. some_bash

And some_bash that looks like this:

if [ "$?" != "0" ]
then
 do_something
else
 do_something_else
fi

I would expect that, some_bash, being executed in the parent's environment (.), would get the exit status ($?) of parent's some_command. But it doesn't. Im guessing it is getting an exit status of successfully calling itself, which is always true.

Is there any way to bypass this, other than some_bash $?and if [ "$1" != "0" ]?

Upvotes: 2

Views: 81

Answers (3)

Fritz G. Mehner
Fritz G. Mehner

Reputation: 17188

You could export the exit status:

some_command
export LASTRETURN=$?
. some_bash

Inside some_bash you can use

${LASTRETURN}

Upvotes: 0

Hari Menon
Hari Menon

Reputation: 35405

You can write a function instead of a script and use it:

foo() {
  if [ "$?" != "0" ]
  then
    do_something
  else
    do_something_else
  fi
}

some_command
foo

You can define foo in some script, say script.sh. Then you can use it like:

. script.sh
some_command
foo

Upvotes: 0

konsolebox
konsolebox

Reputation: 75478

Consider passing the value to the command:

some_command
. some_bash "$?"

if [[ $1 -ne 0 ]]; then

Although it would replace any positional parameter that currently exists.

Upvotes: 1

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