How can I get exit code of wget from the subshell process?
So, main problem is that $? is equal 0. Where can $?=8 be founded?
$> OUT=$( wget -q "http://budueba.com/net" | tee -a "file.txt" ); echo "$?"
0
It works without tee, actually.
$> OUT=$( wget -q "http://budueba.com/net" ); echo "$?"
8
But ${PIPESTATUS} array (I'm not sure it's related to that case) also does not contain that value.
$> OUT=$( wget -q "http://budueba.com/net" | tee -a "file.txt" ); echo "${PIPESTATUS[1]}"
$> OUT=$( wget -q "http://budueba.com/net" | tee -a "file.txt" ); echo "${PIPESTATUS[0]}"
0
$> OUT=$( wget -q "http://budueba.com/net" | tee -a "file.txt" ); echo "${PIPESTATUS[-1]}"
0
So, my question is - how can I get wget's exit code through tee and subshell?
If it could be helpful, my bash version is 4.2.20.
By using $() you are (effectively) creating a subshell. Thus the PIPESTATUS instance you need to look at is only available inside your subshell (i.e. inside the $()), since environment variables do not propagate from child to parent processes.
You could do something like this:
OUT=$( wget -q "http://budueba.com/net" | tee -a "file.txt"; exit ${PIPESTATUS[0]} );
echo $? # prints exit code of wget.
You can achieve a similar behavior by using the following:
OUT=$(wget -q "http://budueba.com/net")
rc=$? # save exit code for later
echo "$OUT" | tee -a "file.txt"